KR20040085723A - Disc and hub assembly for electro-magnetic clutch - Google Patents

Abstract

PURPOSE: A disk and hub assembly for an electro-magnetic clutch is provided to buffer impact, and to reduce noise by attaching the disk slowly with elastic force of a leaf spring and a supporting part and by detaching the disk from the pulley quickly. CONSTITUTION: A disk and hub assembly of an electro-magnetic is composed of a hub(10); a disk(20) installed around the circumference of the hub and attached or detached from the friction surface of a pulley with magnetic flux of a field coil unit to transmit power to a rotating shaft of a compressor; and plural leaf springs(30) arranged opposite to the disk and fastened to the hub and the disk to apply restoring force to the disk. The hub is composed of a hub part(11) combined with the rotating shaft of the compressor, and a flat elastic supporting part(12) integrally formed in the hub part to cover and support the side of the disk. The leaf springs are arranged radially and inclined, and inner and outer ends of the leaf springs are fixed to the hub part and the disk.

Description

Disk and hub assembly for electronic clutch {DISC AND HUB ASSEMBLY FOR ELECTRO-MAGNETIC CLUTCH}

The present invention relates to a disk and hub assembly for an electronic clutch, and more particularly, to a disk and hub assembly for an electronic clutch which simplifies parts and reduces noise generated when the disk is pulled out of the pulley. It is about.

Compressor constituting the air conditioner of the vehicle is a device that selectively receives the power of the engine delivered through the pulley by the intermittent action of the electronic clutch to compress the refrigerant supplied from the evaporator to send to the condenser.

An electromagnetic clutch for interrupting power transmission of the engine to the compressor is typically inserted into a pulley and supported by the compressor side to generate a suction magnetic flux upon application of power; The disk and hub assembly is splined to the end of the drive shaft of the compressor by a hub and moved according to the operation of the field coil unit to closely contact the friction surface of the pulley or to separate the friction surface of the pulley to selectively transmit engine power to the drive shaft of the compressor. It is made, including.

1 and 2, the disc and hub assembly includes a hub 1 having a spline 1a formed on an inner circumferential surface thereof, splined to a drive shaft (not shown) of the compressor, and having a flange 1b on an outer circumferential surface thereof. , A disc 2 having an inner discring 2b and an outer discring 2c installed around a flange 1b of the hub 1 and connected to each other by a plurality of bridges 2a (shown in FIG. 1). ), A damper means fixed over the outer discring 2c and the flange 1b of the hub 1, and a support plate 3 for supporting the damper means.

The damper means is interposed between the disc 2 and the support plate 3, and both ends thereof are joined by rivets 4a and 4b to the outer discring 2c of the disc 2 and the flange of the hub 1. Leaf springs 4 respectively fixed to 1b) may be used. The leaf spring 4 is preferably arranged radially with a plurality of (shown as three in the figure) at an angle.

The three leaf springs 4 are each made of the same material and of the same size.

Therefore, the disk 2 is moved toward the pulley receiving the engine power through the belt by the magnetic attraction force generated by the magnetic flux generated in the field coil unit of the compressor clutch, so that the friction surface of the disk 2 is applied to the friction surface of the pulley. By contact, the engine power is transmitted to the drive shaft of the compressor by the frictional force. When the power supply to the field coil unit is stopped, the disc 2 moves in the opposite direction to the friction surface of the pulley by the elastic force of the leaf spring 4, so that the friction surface of the disk 2 and the friction surface of the pulley are stopped. By this separation, no power is transmitted to the drive shaft of the compressor.

However, according to the electronic clutch according to the prior art, the return of the disk 2 is performed only by the elastic force of the leaf spring 4, where the elastic force of the leaf spring 4 is adsorbed by the magnetic flux by the field coil unit ( It is weaker than the force of 2), so that during the air conditioner's on operation, the disc 2 is adsorbed to the friction surface of the pulley at one instant, and a lot of noise is generated. In addition, since the elastic force of the leaf spring 4 is weak and the disc 2 does not fall in a short time when the air conditioner is turned off, noise also occurs.

In addition, the disk and the hub assembly is composed of four components, the hub (1), the disk (2), the leaf spring (4) and the support plate (3), each component is assembled through the respective assembly process bar There are also disadvantages in that productivity increases due to increased assembly work and manufacturing costs increase.

Accordingly, an object of the present invention is to provide a disk and hub assembly for an electronic clutch which can reduce noise generated when the disk is adsorbed to the pulley / falls off the pulley.

In addition, another object of the present invention is to improve the structure of the component to reduce the component.

1 is an exploded perspective view of a disc and hub assembly for an electronic clutch according to the prior art;

Figure 2 is a longitudinal cross-sectional view of a disc and hub assembly for an electronic clutch according to the prior art.

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

4 is a perspective view of a disk and hub assembly for an electronic clutch according to the present invention;

5 is a front perspective view of a hub applied to the disc and hub assembly for an electronic clutch according to the present invention;

6 is a cross-sectional view taken along line VI-VI of FIG. 4 to show a coupling relationship between a disk and a hub assembly for an electronic clutch according to the present invention.

<Description of Symbols for Major Parts of Drawings>

10: hub, 11: hub portion

11a: spline, 11b: flange

12: support portion, 12a: hub receiving portion

20: disk, 21: bridge

22: internal disking, 23: external disking

30: leaf spring, 31,32: rivet

Disc and hub assembly for an electronic clutch according to the present invention for achieving the above object is a disk that is adsorbed to the friction surface of the pulley by the magnetic flux by the field coil unit to transfer power to the compressor shaft; A hub having a plate-shaped support portion which is formed on one side of the disk and integrally formed on one side circumference of the hub portion and penetrates through the central hole of the disk and is coupled to the drive shaft of the compressor; And a plurality of leaf springs disposed at opposite sides of the hub of the hub and fixed to both the hub and the disc of the hub to provide restoring force to the disc, respectively.

Preferably, the hub portion is made of a metal material, the support portion is made of an elastic material, and the hub portion and the support portion are insert molded and integrated.

A plurality of recesses are formed at the edge of the support, through which the outer end of the leaf spring can be riveted to the disc.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to this, the terms or words used in the present specification and claims are defined in the technical spirit of the present invention on the basis of the principle that the inventor can appropriately define the concept of the term in order to explain his invention in the best way. It must be interpreted to mean meanings and concepts.

3 is an exploded perspective view of a disk and hub assembly according to the present invention, Figure 4 is a perspective view of a disk and hub assembly for an electronic clutch according to the present invention, Figure 5 is applied to a disk and hub assembly for an electronic clutch according to the present invention 6 is a front perspective view of the hub, and FIG. 6 is a cross-sectional view taken along line VI-VI of FIG. 4 for showing a coupling relationship between the disk and the hub assembly according to the present invention.

As shown in FIG. 3, the disk and hub assembly according to the present invention includes a hub 10 fixed to a compressor rotating shaft (not shown), a disk 20 installed around the hub 10, and the hub. And a damper means fixed to the disk 10 and providing the restoring force to the disk 10.

As shown in FIG. 3, the disk 20 may be composed of an inner disk ring 22 and an outer disk ring 23 connected to each other by a plurality of bridges 21.

As shown in FIG. 5, the hub 10 includes a hub portion 11 having a spline 11a formed therein, splined to the compressor rotation shaft, and provided with a flange 11b at a circumference thereof, and the hub portion 11. It consists of a plate-like support portion 12 formed integrally with the circumference of. As shown in FIG. 6, the hub 10 in which the hub part 11 and the support part 12 are integrated has the support part 12 while the hub part 11 penetrates through the central through hole 20a of the disk 20. One side of the disk side is in surface contact with the disk 20.

As shown in FIG. 3, the hub part 11 and the support part 12 may be manufactured by insert molding, and a hub receiving part 12a in which the hub 11 is insert molded is formed at the center part of the support part 12. It may be formed to protrude with a predetermined height step (t). The step t serves to make the leaf spring 13 easily deformed when the disc 10 moves to the pulley side by applying a pre-tension to the leaf spring 13.

The support 12 is rounded along the circumference of the disk 10, and the recess 12b is formed at regular intervals along the circumference.

The hub part 11 may be made of a metal material such as steel, and the support part 12 may be made of an elastic material such as rubber or synthetic resin.

The hub portion 11 may be formed stepped to a height lower than the surface of the support portion 12.

As the damper means for providing a restoring force to the disk 20, for example, a leaf spring 30 may be used. As shown in Figures 4 and 6, the leaf spring 30 is one side of the support portion 12 of the hub 10 (opposite side of the disk 20) in the state that the disk 20 and the hub 10 are stacked The inner and outer ends thereof are fixed to the hub 10 and the disk 20 by the rivets 31 and 32. The inner rivet 31 is riveted to the inner end of the leaf spring 30 and the flange 11b and the support 12 of the hub portion 11, the outer rivet 32 is the recessed portion of the support 12 It is riveted to the outer end of the leaf spring 30 and the disk 20 via 12b.

Leaf spring 30 may be installed in a curved state as shown in Figure 6 so that the disk 20 does not move by a small force.

The action of the disk and hub assembly for an electronic clutch according to the present invention configured as described above is as follows.

The disk 20 moves toward the pulley receiving the engine power through the belt by the magnetic attraction force generated by the magnetic flux generated by the field coil unit of the compressor clutch, and the friction surface of the disk 20 contacts the friction surface of the pulley. The frictional force transmits the power of the engine to the drive shaft of the compressor. When the disk 20 is adsorbed on the pulley, the disk 20 moves to the pulley in a state of repulsion by the leaf springs 30, and the hub 10 approaches the friction surface of the pulley. The support 12 of the to prevent the bending of the leaf spring 30 to reduce the speed at which the disk 20 is adsorbed.

Then, when the power supply to the field coil unit is stopped, the disk 20 is dropped from the friction surface of the pulley at a high speed by the elastic force of the leaf spring 30 and the elastic force of the support part 12 of the hub 10. No power is transmitted to the drive shaft of.

Therefore, when the disk 20 is adsorbed to the friction surface of the pulley, the disk 20 is prevented from being temporarily adsorbed by the elastic force of the leaf spring 30 at once, and also the supporting portion of the hub 10 is secondarily. (12) slows the bending of the leaf spring 30 to indirectly slow the adsorption of the disk 20 through the leaf spring 20, so there is little impact and noise when the disk 20 is adsorbed.

In addition, when the disk 20 falls from the pulley, there is no noise generated when the disk 20 is quickly dropped by the elastic force of the leaf spring 30 and the support part 12 of the hub 10 and the disk falls slowly as in the prior art. . In addition, the disk 20 falls and hits the support 12 of the hub 10, at this time the impact is absorbed by the support 12 to reduce the noise.

In addition, since the hub portion 11 and the support portion 12 are integrated to manufacture the disc and the hub assembly by assembling the leaf spring 30 to the hub portion 11 and the disc 20, the disc and the hub assembly can be manufactured. Less components and assembly work.

In the above embodiment, the hub part and the support part are integrated with the insert molding, but the structure may be coupled to the hub part after forming the support part separately.

As described above, according to the disk and hub assembly for an electronic clutch according to the present invention, the adsorption speed of the disk to the pulley is slowed down, and the speed is reduced when falling off the pulley, so the noise is reduced.

In addition, since the components are reduced and the assembly process is reduced accordingly, manufacturing cost can be reduced and productivity can be improved.

In addition, there is an effect that the soundproofing effect can also be achieved by the supporting portion of the hub.

While the invention has been described and illustrated in connection with a preferred embodiment for illustrating the principles of the invention, the invention is not limited to the configuration and operation as such is shown and described. Rather, those skilled in the art will appreciate that many modifications and variations of the present invention are possible without departing from the spirit and scope of the appended claims. Accordingly, all such suitable changes and modifications and equivalents should be considered to be within the scope of the present invention.

Claims (4)

A disk which is attracted to the friction surface of the pulley by magnetic flux by the field coil unit and transmits power to the compressor rotating shaft; A hub having a hub portion penetrating the central through hole of the disk and coupled to a drive shaft of the compressor, and having a plate-shaped support portion formed on one side of the hub portion and disposed on one side of the disk to support the disk; And a plurality of leaf springs disposed on opposite sides of the hub of the hub and fixed to both the hub portion and the disk, the leaf springs providing resilience to the disk, respectively. . The method of claim 1, The hub portion is made of a metal material, the support portion is made of an elastic material, the hub portion and the support portion of the electronic clutch disk and hub assembly, characterized in that integrated by insert molding. The method according to claim 1 or 2, A plurality of recesses are formed at the edges of the support, and the outer end of the leaf spring is riveted to the disk through the recesses. The method according to claim 1 or 2, The surface of the hub receiving portion in the center of the support portion to which one end of the leaf spring is fixed and supported is formed to protrude with a step height of a predetermined height so as to apply a pre-tension to the leaf spring. Disk and hub assembly.