KR20040073687A - Disk and hub assembly for electromagnetic clutch in compressor - Google Patents

Abstract

The present invention aims to effectively reduce noise and to prevent dust or foreign matter from entering between the disc and the pulley, and to prevent the sound absorbing member from being separated by centrifugal force during high speed rotation.

Disc and hub assembly for an electromagnetic clutch of the compressor according to the present invention for achieving the above object, the disk (100); A hub 200 coupled to the drive shaft of the compressor and having a flange portion 220 formed therein; A plurality of first fixing parts 330 located in an outer region to be fixedly coupled to the disk 100 by means of a plurality of slots 310 having a predetermined length and shape formed on a flat plate, and the hub ( Leaf spring portion connecting the second fixing portion 335 located in the inner region and the first and second fixing portions 330 and 335 to be fixedly coupled to the flange portion 220 of the 200 via a coupling means. A leaf spring plate 300 having a 340; The sound absorbing member 400 is installed between the leaf spring plate 300 and the disk 100 and is formed to increase in thickness from the inner side to the outer side in the radial direction of the leaf spring plate 300 by a predetermined value or more. Characterized in that the made up.

Description

Disk and hub assembly for electromagnetic clutch in compressor

The present invention relates to a disk and hub assembly for an electronic clutch of a compressor, and more particularly, to effectively reduce noise and to prevent dust or foreign matter from entering between the disk and the pulley, and additionally, to absorb sound at high speed. Disclosed is a disc and hub assembly for an electromagnetic clutch of a compressor such that the member is not separated by centrifugal force.

The compressor, which is a part of the vehicle air conditioning system, is a device that selectively receives the power of the engine delivered through the pulley by the intermittent action of the electronic clutch, compresses the refrigerant supplied from the evaporator, and sends the refrigerant to the condenser.

The electromagnetic clutch for transmitting the power of the engine to the compressor is typically inserted into a pulley that is rotatably installed via a bearing in the compressor, and is supported on the compressor side to generate suction magnetic flux upon application of power. ; The engine is selectively connected to the drive shaft of the compressor by being connected to the drive shaft of the compressor by a hub and attracted to or separated from the rotor friction surface of the pulley by the suction flux generated by the electromagnetic coil of the field core unit. And a disk and hub assembly for delivering.

As a type using a plurality of leaf springs as an example of the prior art of the disk and hub assembly in the configuration of the electronic clutch, as shown in Figures 1 and 2, the hub (1) and the disk (2), leaf spring ( It is composed of 3).

First, the hub 1 has a hub body 11 having a coupling hole 11a formed with a spline (not shown) to be splined with a compressor drive shaft (not shown), and around the outer peripheral surface of the end side of the hub body 11. The flange portion 12 is formed.

The flange portion 12 of the hub 1 is formed with a rivet hole 12a (three examples in the drawing).

Next, a through hole 2a having a diameter larger than the diameter of the flange portion 12 of the hub 1 is formed at the center of the disk 2.

In more detail, the disc 2 is positioned to maintain a constant gap between the outer ring 21 and the inner portion of the outer ring 21 and to maintain a constant gap with the flange portion 12 of the hub 1. The inner ring 22 is positioned, and the outer ring 21 and the inner ring 22 are connected to form an arc-shaped slot 23a.

On the outer ring 21, a plurality of rivet holes 23b (through which three are shown) are formed through.

Here, the flange portion 12 of the hub 1 is inserted and positioned in the through hole 2a of the disk 2.

On the other hand, the leaf spring (3) has a shape that is bent at a constant angle, each end 31, 33 and the bent portion 32 is formed with holes 31a, 33a, 32a through, respectively One end portion 31 of the leaf spring 3 is coupled to the hole 23b of the outer ring 21 via the rivets 5, 51, 52, and has a hole formed in the other end 33 ( The rubber spacers 6, 61, and 62 are coupled to the inner ring 22 to be tightly supported by the inner ring 22, and spaced apart from the other end 33 of the leaf spring 3 by the inner ring 22. The bent portion 32 is coupled to the holes 32a and 12a via the rivets 7, 71 and 72.

Disc and hub assembly according to the prior art configured as described above when the power is applied to the electromagnetic coil of the field coil unit (not shown), the disk 2 receives the power of the engine by the belt suction force of the electromagnetic coil by the belt By moving toward the pulley, the friction surface of the disk 2 is attracted to the friction surface of the pulley, whereby the engine power is transmitted to the drive shaft of the compressor through the disk 2 and the hub 1 by the frictional force.

When the power supply to the electromagnetic coil is stopped, the disc is separated from the friction surface of the pulley by the elastic force of the leaf spring 3 so that power is not transmitted to the drive shaft of the compressor.

However, in the prior art as described above, there is a problem in that noise is largely generated structurally during clutch on and off operation.

In the leaf spring-type disk and hub assembly, since the arc-shaped slot 23a formed in the disk 2 is exposed, dust or foreign matter enters the pulley through the slot 23a of the disk 2, and eventually, The frictional force between the pulley and the disk 2 is lowered to reduce the power transmission efficiency, and there is also a problem that the friction surface of the disk 2 or the pulley is damaged.

The present invention was devised to solve the above problems, to effectively reduce noise and to prevent dust or foreign matter from entering between the disc and the pulley, and additionally, the sound absorbing member is rotated by a centrifugal force at high speed. It is an object of the present invention to provide a disc and hub assembly for an electromagnetic clutch of a compressor that is not detached.

1 is an exploded perspective view showing a disk and hub assembly for an electronic clutch of a compressor according to the prior art.

2 is a perspective view of the combination of FIG.

Figure 3 is an exploded perspective view showing a disk and hub assembly for an electromagnetic clutch of the compressor according to the present invention.

4 is a perspective view of the combination of FIG.

5 is a cross sectional view of FIG. 3.

Figure 6 is an enlarged perspective view of the appearance of the sound absorbing member of the present invention.

<Description of the symbols for the main parts of the drawings>

100: disk

101: through

200: hub

220: flange portion

300: leaf spring plate

310: slot

330: first fixing part

335: second fixing part

340: leaf spring portion

400: sound absorption member

Disc and hub assembly for an electromagnetic clutch of the compressor according to the present invention for achieving the above object, the disk; A hub coupled to the drive shaft of the compressor and having a flange portion; A plurality of first fixing parts located in an outer region so as to be fixedly coupled to the disk by means of a plurality of slots having a predetermined length and shape formed on a flat plate, and fixing means via a coupling part to a flange portion of the hub; A leaf spring plate having a second fixing portion positioned in an inner region to be coupled and a leaf spring portion connecting the first and second fixing portions; It is installed between the leaf spring plate and the disk, characterized in that it comprises a sound absorbing member formed so as to increase the thickness more than a predetermined value from the inner surface to the outer surface in the radial direction of the leaf spring plate.

Hereinafter, a preferred embodiment of the electronic clutch disk and hub assembly of the compressor according to the present invention will be described in detail with reference to the accompanying drawings.

3 is an exploded perspective view showing an electronic clutch disk and hub assembly of the compressor according to the present invention, FIG. 4 is a combined perspective view of FIG. 3, and FIG.

As shown, the assembly according to the present invention comprises a disk 100, a hub 200, a leaf spring plate 300, and a sound absorbing member 400.

The disk 100 is made of a plate-like body having a through hole 101 of a constant diameter in the center.

The hub 200 is formed with a coupling hole 210 to be splined to the drive shaft of the compressor (not shown), the flange portion 220 is formed on the outer circumferential surface to be inserted into the through hole 101 of the disk (100).

The leaf spring plate 300 is formed so that the outer diameter is substantially the same as the disk 100 to cover it.

The leaf spring plate 300 has a plurality of slots 310 having a predetermined length and shape are arranged in a fixed position.

The leaf spring plate 300 includes a plurality of first fixing parts positioned in an outer region to be fixedly coupled to the disk 100 by means of a plurality of slots 310 having a predetermined length and shape formed on a flat plate. 330, a second fixing part 335 positioned in an inner region to be fixedly coupled to the flange portion 220 of the hub 200 through a coupling means, and the first and second fixing parts 330 ( A leaf spring portion 340 connecting the 335 is provided.

More specifically, the first fixing portion 330 fixedly coupled to the disk 100 by means of these slots 310 via rivets 320, 321 and 322, which are coupling means, and the first height. Leaf spring portion 340 having second fixing portion 335 is integrally formed so that the remaining portion except for the top portion 330 is fixedly coupled to the flange portion 220 of the hub 200 through the coupling means. do.

The first fixing part 330 is located in an area corresponding to an outer part of the slot 310, and the leaf spring part 340 is located in an inverse area corresponding to an inner part of the slots 310. The government 335 is also located in an area corresponding to the inner portion of the slot 310.

Here, three slots 310 are illustrated in the present invention, and thus three leaf springs 340 are illustrated.

Here, reference numeral 301 denotes the center of the leaf spring 300 such that a fastening bolt (not shown) is inserted to fix the hub 200 to the drive shaft of the compressor splined into the coupling hole 210 of the hub 200. Fastening bolt insertion hole formed in.

The sound absorbing member 400 is installed between the leaf spring plate 300 and the disk 100.

In more detail, the sound absorbing member 400 is separately installed between the leaf spring plate 300 and the disc 100 at a portion corresponding to the leaf spring portion 340 and the first fixing portion 330. In the radial direction of the leaf spring plate 300 (arrow B in Fig. 6) is formed so that the thickness increases from the inner side to the outer side by a certain value or more.

In addition, as shown in FIG. 6, the sound absorbing member 400 may be formed to have a uniform thickness in correspondence with the circumferential direction (arrow A) of the leaf spring plate 300.

Here, the gradient (α) in the radial direction of the sound absorbing member 400 is preferably 1 ° (degrees) ± 0.5 ° (degrees), as shown in FIG.

In addition, the sound absorbing member 400 has three examples according to the number of leaf spring (340).

In addition, the sound absorbing member 400 has a fastening hook 410 integrally formed on one side thereof, and the fastening hook 410 is penetrated through the first fixing part 330 of the leaf spring plate 300. It protrudes.

The sound absorbing member 400 further includes a protrusion 420 spaced apart from the fastening hook 410 by a predetermined interval and penetrating between the first fixing parts 330 of the leaf spring plate 300.

And, the sound absorbing member 400 is preferably made of a rubber material.

The first fixing part 330 of the sound absorbing member 400 described above is in a state of always being in contact with the disk 100, and serves to absorb noise and shock when the disk 100 is attached and detached.

Here, reference numeral 321 denotes a spacer.

In addition, the reference numeral 350 serves as a damper to support the disk 100 which is coupled to the fastening hole 335b formed in the radially extending portion 335a of the second fixing part 335 and is separated from the pulley (not shown) surface. Do it.

Referring to the operation of the assembly according to the present invention configured as described above are as follows.

First, when power is applied to an electromagnetic coil of a field coil unit (not shown), the disk 100 moves toward the pulley receiving the engine power by the belt by the magnetic flux suction force of the electromagnetic coil, so that the friction surface of the disk 100 By adsorbing to the friction surface of the pulley, the engine power is transmitted to the drive shaft of the compressor through the disk 100 and the hub 200 by the friction force.

When the power supply to the electromagnetic coil is stopped, the disc 100 is separated from the friction surface of the pulley by the elastic force of the leaf spring part 340 so that power is not transmitted to the drive shaft of the compressor.

Here, when the disk 100 is in a state of being adsorbed on the friction surface of the pulley, the leaf spring portion 340 of the leaf spring plate 300 is elastically deformed toward the disk 100, while the disk 100 is When separated from the friction surface of the pulley, the leaf spring portion 340 of the leaf spring plate 300 is returned to its original state.

In this process, the disk 100 collides with the leaf spring plate 300 by the return force of the leaf spring part 340, but there is a problem of noise generation. However, the noise is between the disk 100 and the leaf spring plate 300. Absorbed by the sound absorbing member 400 interposed therein.

On the other hand, since the sound absorbing member 400 covers the whole of the disk 100, it is essentially blocking dust or foreign matter from entering the pulley through the slot 310 of the disk 100, and eventually the pulley and the disk. Maintaining the frictional force with the (100) in the present state and prevent the reduction of the power transmission efficiency, as well as solve the problem that the friction surface of the disk 100 or the pulley is damaged.

And, even if the centrifugal force is applied when the assembly of the present invention rotates at a high speed with the compressor, as shown in FIG. Because of this, the centripetal force toward the center of the disk 100 is greater than this centrifugal force.

In addition, while the leaf spring portion 340 of the leaf spring plate 300 is elastically deformed together with the disk 100, the first fixing portion 330 is attracted to the friction surface of the pulley.

As a result, the first fixing part 330 presses the outer side of the sound absorbing member 400 so that the compressive deformation occurs toward the inner surface of the sound absorbing member 400.

Thereafter, since a gap is formed between the inner surface of the sound absorbing member 400 and the leaf spring plate 300 due to the structure of the sound absorbing member 400, the gap provides a space capable of sufficiently accommodating the compressive deformation. .

Therefore, when the present invention rotates at a high speed while the disk is adsorbed on the friction surface of the pulley, the sound absorbing member can be prevented from being broken off or torn out of the disk or leaf spring plate.

As described above, according to the disk and hub assembly for an electronic clutch of the compressor according to the present invention, it is possible to effectively reduce noise and to prevent dust or foreign matter from flowing between the disk and the pulley, and additionally during high speed rotation. The sound absorbing member can be prevented from being separated by the centrifugal force.

Claims (5)

Disk 100; A hub 200 coupled to the drive shaft of the compressor and having a flange portion 220 formed therein; A plurality of first fixing parts 330 located in an outer region to be fixedly coupled to the disk 100 by means of a plurality of slots 310 having a predetermined length and shape formed on a flat plate, and the hub ( Leaf spring portion connecting the second fixing portion 335 located in the inner region and the first and second fixing portions 330 and 335 to be fixedly coupled to the flange portion 220 of the 200 via a coupling means. A leaf spring plate 300 having a 340; The sound absorbing member 400 is installed between the leaf spring plate 300 and the disk 100 and is formed to increase in thickness from the inner side to the outer side in the radial direction of the leaf spring plate 300 by a predetermined value or more. Disc and hub assembly for an electronic clutch of the compressor, characterized in that made. The method of claim 1, The sound absorbing member 400, the fastening hook 410 is formed integrally on one side, the fastening hook 410 is coupled through and projected between the first fixing portion 330 of the leaf spring plate 300 Disc and hub assembly for an electronic clutch of the compressor, characterized in that. The method of claim 2, The sound absorbing member 400 is provided with a protrusion 420 spaced apart from the fastening hook 410 by a predetermined interval between the first fixing portion 330 of the leaf spring plate 300 is characterized in that the electron of the compressor Disc and hub assembly for clutch. The method according to any one of claims 1 to 3, The sound absorbing member 400 is an electronic clutch disk and hub assembly of the compressor, characterized in that the rubber material. The method of claim 4, wherein Gradient (α) in the radial direction of the sound absorbing member 400 is 1 ° (degrees) ± 0.5 ° (degrees) characterized in that the disc and hub assembly of the compressor.