KR100926933B1 - Electronic clutch - Google Patents

Abstract

The present invention provides a simpler, cheaper and more effective noise prevention method for mounting the elastic member between the disk and the leaf spring. Even when the elastic member is not bonded to the disk and the leaf spring, the elastic member may be rotated at high speed. In order to prevent the departure from the outside, the field core assembly in which the electromagnetic coil is embedded to generate the electromagnetic force, the pulley assembly provided with a pulley on the outer circumference, and the hollow adsorbed or detached to the friction surface of the pulley by the action of the electromagnetic coil A disk, a hub connected to the drive shaft of the compressor through the disk, at least two elastic parts are provided, and at least two disk coupling parts are coupled along an edge thereof, and the hub is coupled to a central part thereof. Leaf spring provided with at least two hub couplings, said disk and said leaf To be interposed between the ring, the present invention relates to an electromagnetic clutch, characterized in that comprising an elastic member provided between the disk engaging portion and the hub coupling portion.

Description

Electronic clutch {Clutch}

1A and 1B are a front view and a cross-sectional view of A-A 'showing a conventional round rubber disk and hub assembly, respectively;

2A and 2B are front views showing a conventional leaf spring bumper disc and hub assembly, respectively, and a cross sectional view taken along line B-B 'thereof;

3 is a cross-sectional view showing an electromagnetic clutch according to a first preferred embodiment of the present invention;

Figure 4 is an exploded perspective view showing a coupling state of the disk and the hub assembly of the electromagnetic clutch according to the first embodiment of the present invention,

5 is a front view showing the leaf spring coupled to the elastic member of the electromagnetic clutch according to the first embodiment of the present invention,

6 is a cross-sectional view taken along line CC ′ of FIG. 5;

7 is a perspective view showing a damper portion of the elastic member of the electromagnetic clutch according to the first embodiment of the present invention;

8 is a front view of an electromagnetic clutch according to a first preferred embodiment of the present invention;

9 is a front view of an electromagnetic clutch according to a second preferred embodiment of the present invention;

10 is a cross-sectional view taken along line D-D 'of FIG. 9;                 

11 is a front view of an electromagnetic clutch with a leaf spring of yet another form in a second preferred embodiment of the present invention;

12 is a cross-sectional view taken along line E-E 'of FIG. 11;

Fig. 13 is a front view of an electromagnetic clutch provided with a leaf spring of yet another form in the second preferred embodiment of the present invention.

14 is a cross-sectional view taken along line F-F 'of FIG. 13;

15 is a front view of an electromagnetic clutch provided with another type of leaf spring and an elastic member in a second preferred embodiment of the present invention;

FIG. 16 is a cross-sectional view taken along line G-G 'of FIG. 15;

17 is a front view of an electromagnetic clutch according to a third preferred embodiment of the present invention;

18 is a cross-sectional view taken along line H-H 'of FIG. 17;

19 is a front view of the elastic member provided in the electromagnetic clutch according to FIG. 17;

20 is a rear view of the elastic member of FIG. 19;

21 is a front view of an electromagnetic clutch provided with another type of leaf spring and an elastic member in a third preferred embodiment of the present invention;

FIG. 22 is a sectional view taken along line II ′ in FIG. 21;

The present invention relates to an electromagnetic clutch for intermittent transmission of engine power to a vehicle compressor, and more particularly, to an electromagnetic clutch that can reduce noise with a simpler structure.

The compressor, which receives rotational force from a driving source such as an engine of a vehicle, receives power transmitted through a pulley connected to the engine, and selectively receives the power of the engine by using an electronic clutch to compress a refrigerant supplied from an evaporator to a condenser. To pass.

The electric clutch that interrupts the power transmission of the engine to the compressor is splined to the drive shaft of the compressor by a pulley assembly directly connected to a drive source such as an engine, and is connected to the friction surface of the pulley by a hub. Disc & Hub Assembly, which selectively transfers engine power to the drive shaft of the compressor by being spaced from the friction surface, and field coils with electromagnets that allow the disc and hub assembly and pulley assembly to be connected and disconnected It consists of a field coil assembly.

The field coil assembly is installed inside the pulley of the pulley assembly to function to pull the disk of the disk and hub assembly to the friction surface of the pulley in accordance with the operation of the electromagnet. The disk and hub assembly consists of a disk and a hub, the disks being arranged with a small gap against the pulley, and the hub is coupled to the drive shaft of the compressor. The disk and the hub are interconnected between the disk and the hub and the disk attached to the friction surface of the pulley when the electromagnet of the field coil assembly is stopped is restored to its original shape so that the disk is separated from the pulley. An elastic structure is provided.

In compressors for vehicle air conditioners, disc and hub assemblies are classified into various types according to the elastic structure.

Disc and hub assemblies commonly used in the art include round rubber type disc and hub assemblies as seen in FIGS. 1A and 1B. As shown in the figure, the round rubber disk and hub assembly 10 has an inner hub 11 connected to the drive shaft and an outer hub 13 connected to the disk 12, and the inner hub 11 is separated. ) And the outer hub 13 are structures joined by a rubber member 14 such as rubber. The round rubber-type disc and hub assembly has an effect of reducing the noise because the rubber member 14 buffers the space between the disc 12 and the inner hub 11, but the rubber member 14 Since one side of the disk 12 and the inner and outer hubs 11 and 12 must be bonded to both, the assembly is inferior and the weight is disadvantageous.

On the other hand, another type of disk and hub assembly, as shown in Figures 2a and 2b, a plurality of leaf springs 23 are installed between the disk 22 and the hub 21 connected to the drive shaft of the compressor It is. The leaf spring bumper type disc and hub assembly 20 has a leaf spring 23 formed to extend in the longitudinal direction, one end of which is fixed to the edge of the disk 22 by rivets 23a, and the other end of the hub 21 The disk 22 fixed to the flange 21a and attached to the friction surface of the pulley by the electromagnet of the field core assembly is restored to its original state by the restoring force of the leaf spring 23 when the electromagnetic force of the electromagnet is released. It is a structure. However, in the leaf spring bumper-type disk and hub assembly 20, noise is generated when the disk 22 is adsorbed and spaced apart. In order to reduce the noise, the disk 22 and the hub flange 21a are conventionally bumpered. A damper 25 made of a rubber material is provided around the outer circumferential surface of the bumper rivet 26 so that the flange of the damper 25 is connected to the disk 22 and the hub flange 21a. It was interposed between, and the bumper rivet 26 was provided with a bumper 24 for noise reduction. Therefore, when the air conditioner of the vehicle is operated and power is applied to the field core assembly, the adsorption noise of the leaf spring 23 is reduced by the compression of the bumper 24, and when the power is released to the field core assembly, the leaf is removed by the damper 25. The departure vibration of the spring 23 is to function to be absorbed.

However, the leaf spring bumper-type disk and hub assembly has a structure in which the damper and the bumper provided with the rubber material have different functions, respectively, and thus have a separated structure, and thus, the assembly and the structure of the elastic structure are complicated. There was a problem of getting lost. In addition, the leaf spring bumper-type disk and hub assembly is limited to reduce the noise because the rubber member, which is a dust absorber, is installed only in a very small area of the disk and hub.

On the other hand, with respect to the elastic structure of the structure in which the damper and the bumper are separated, Japanese Laid-Open Patent Publication No. 2002-48155 discloses a disk and hub assembly in which a rubber member having a function of a bumper and a damper is interposed between the disk and the hub. have. According to the disclosed disc and hub assembly, a triangular slot is formed in a disc-shaped plate, and each vertex portion of the triangular plate is connected to a hub by a leaf spring coupled to the plate, and the inner surface of the outside of the slot of the leaf spring is a rubber member. Has a structure bonded to the disk in the bonded state. Therefore, the rubber member has a function of absorbing vibrations due to adsorption and detachment of the disk, that is, a function of a bumper and a damper. However, the disk and hub assembly of such a structure is a structure in which the rubber member is joined to the leaf spring and the disk, which is expensive for molding the rubber member, and the equipment is also large, resulting in manufacturing problems.

In addition, in the disk and hub assembly having the above-described structure, when the rubber member is assembled in a non-bonded manner, a problem arises in that the rubber member is separated during high speed rotation.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide an electronic clutch that can more effectively and effectively prevent noise in mounting an elastic member between a disk and a leaf spring.

Another object of the present invention is to provide an electromagnetic clutch which can prevent the elastic member from being separated out during high speed rotation even when the elastic member is not bonded to the disk and the leaf spring.

In order to achieve the above object, the present invention provides a field core assembly in which an electromagnetic coil is embedded to generate an electromagnetic force, a pulley assembly having a pulley provided at an outer circumference thereof, and a suction surface of the pulley by the action of the electromagnetic coil. A hollow disk that is disengaged, a hub connected to the drive shaft of the compressor through the disk, at least two elastic parts are provided, and at least two disk coupling parts to which the disk is coupled along an edge thereof, and at the center of the hub Is interposed between the disk spring and the leaf spring having at least two hub coupling portion is coupled, characterized in that it comprises an elastic member provided between the disk coupling portion and the hub coupling portion Provide an electronic clutch.

According to another feature of the invention, the leaf spring is provided in the shape of a hollow disc, slots of a predetermined shape to impart an elastic force to the elastic portion between each elastic portion.

In this case, an extension part corresponding to the shape of the slot is provided between the hollow part of the leaf spring and the slots, the extension part may be provided to have a predetermined elasticity, and the hub coupling part may be an extension part of the leaf spring. It may be provided in.

According to another feature of the invention, the leaf spring is provided with an extension connecting the hub coupling portion and the disk coupling portion, the extension may be provided to have a predetermined elasticity.

At this time, the leaf spring may be formed hollow.

According to another feature of the present invention as described above, the leaf spring is provided with an elastic member coupling portion for mounting the elastic member, the elastic member coupling portion may extend from the edge portion or the central portion of the leaf spring.

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According to another feature of the invention, the elastic member is mounted to pass through the leaf spring, a damper portion is provided to absorb the vibration between the disk and the leaf spring in the direction of the disk, the disk is friction of the pulley It may be provided with a bumper portion for buffering the force adsorbed on the surface.

According to another feature of the present invention, the damper portion may be provided as a flat portion having a constant thickness thereof, and the bumper portion may be provided as an inclined portion provided so that the thickness thereof becomes gradually thinner toward the leaf spring.

According to another feature of the invention, the elastic member may be provided with a deformable portion that can be deformed in the longitudinal direction of the leaf spring in the portion mounted to the elastic member coupling portion, the deformable portion of the elastic member of the elastic member It may be provided with a hole or a groove formed in the thickness direction in the portion mounted to the member engaging portion.

Hereinafter, an electronic clutch according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The electromagnetic clutch according to the present invention may be preferably used for a compressor of a vehicle air conditioner. In the preferred embodiment of the present invention to be described below, the electronic clutch of the vehicle compressor will be described.

<First Embodiment>

3 is a longitudinal cross-sectional view of an electromagnetic clutch according to a first preferred embodiment of the present invention, FIG. 4 is an exploded perspective view showing a structure of a disk and hub assembly, and FIG. 5 is a leaf spring mounted with an elastic member. 6 is a cross-sectional view taken along line C-C 'of FIG. 5, FIG. 7 is a perspective view showing the structure of the elastic member, and FIG. 8 is a front view of the disk and hub assembly with the leaf spring of FIG.

First, referring to FIG. 3, the electromagnetic clutch 200 is mounted to the front end of the compressor main body 100. The field core assembly 220 in which the electromagnetic coil 224 is embedded to generate the electromagnetic force, and the pulley on the outer circumferential portion thereof. 214 is provided with a pulley assembly 210, and a disk and hub assembly 230 connected to the drive shaft 110 of the compressor main body (100).

Field core assembly 220 is provided with a coil housing 222 and an electromagnetic coil 224 accommodated in the coil housing 222, the coil housing 222 is a magnetic material such as iron cross-section of the U-shape It is formed in a double cylindrical shape. The annular electromagnetic coil 224 is accommodated in the coil housing 222, and the electromagnetic coil 224 is insulated and fixed by a resin material. As the resin material, a resin material which can be molded at a relatively low temperature such as an epoxy resin or an unsaturated polyester resin is used, and the resin material is injected into the coil housing 222 to be molded.

The pulley assembly 210 is connected to the engine by a belt (not shown) to receive the driving force of the engine, and a driving side rotor 212 formed in a double-cylindrical shape having a U-shape in cross section and a pulley joined to an outer circumference thereof. 214 is provided. The outer periphery of the pulley 214 is formed with a multi-stage V-shaped groove is fastened to the belt connected to the engine, the coil housing 222 is finely disposed in the inner space of the drive-side rotor (212). And the bearing 216 is arrange | positioned at the inner peripheral part of this rotor 212, and by this bearing 216, the rotor 212 is rotatable to the cylindrical protrusion part of the front housing 114 of the compressor main body 100. Is supported.

Field core assembly 220 and pulley assembly 210 of this structure can be equally applied to all embodiments of the present invention to be described below.

On the other hand, the sieve disk and hub assembly 230 which maintains a predetermined distance from the friction surface of the pulley 214 on the opposite side of the pulley assembly 210 of the pulley 214 is coupled to the compressor body 100. Is combined. The disk and hub assembly 230 may be formed of a hub 231 fixed to the drive shaft 110 of the compressor main body 100 by the bolt member 112 and a hollow suction or detachment to the friction surface of the pulley 214. A disk 232, a leaf spring 233 for connecting the hub 231 and the disk 232 to each other, and an elastic member interposed between the disk 232 and the leaf spring 233 to act as a buffer ( 234). The hub 231 is fixed to the center of the leaf spring 233 by a hub rivet 237, the disk 232 is the disk rivet 235 to the edge of the leaf spring 233, in particular the elastic portion 233a It is fixed to the sieve via the separate elastic ring 236 by.

In the electromagnetic clutch 200 for a compressor as described above, the structure of the disk and hub assembly 230 can be more clearly described with reference to FIG. 4.

Referring to FIG. 4, as described above, the disk 232 is disposed to face the pulley with a small gap, and is formed in a hollow ring shape with a magnetic material such as iron. In addition, as shown in FIG. 4, the disk 232 has a magnetic blocking slot 232c formed between the inner ring portion 232a and the outer ring portion 232b, and the inner ring portion 232a and the outer ring portion. 232b are integrally connected to each other by a bridge 232d formed in the magnetic blocking slot 232c.

The hub 231 is formed in a cylindrical shape by an iron-based metal, and a flange portion 231a is formed at one end thereof, and the flange portion 231a may pass through the hollow portion 232e of the disk 232. It is formed to the extent that there is. And, a spline (not shown) is formed on the inner circumferential surface of the hub 231 to be splined to the drive shaft of the compressor body.

The hub 231 is coupled to a central portion of the sieve leaf spring 233 inserted into the hollow portion 232e of the disc 232, and the disc 232 has a sieve leaf spring having an elastic member 234 interposed therebetween. 233 is coupled to the edge portion. A more detailed description of the elastic member 234 will be described later. Coupling of the disk 232 and the hub 231 to the leaf spring 233 is made by a disk rivet 235 and a hub rivet 231, respectively, wherein the disk rivet 235 has an elastic ring 236. It is further interposed to reduce the noise caused by the friction between the disk 232 and the leaf spring 233.

The leaf spring 233 according to the first preferred embodiment of the present invention as seen in FIG. 5 is provided with at least two elastic portions 233a along its edge, preferably three elastically arranged in a triangular shape. The part 233a is provided. In addition, a disk coupling part 233e to which the disk 232 is coupled is provided along this edge. According to a first preferred embodiment of the present invention, the disk coupling part 233e includes the elastic part 233a. Located in, as shown in Figure 4, the disk rivet 235 is provided as a through hole to be fastened. Meanwhile, a hub coupling portion 233f is provided at the central portion of the leaf spring to allow the hub 231 to be coupled thereto. According to an exemplary embodiment of the present invention, the hub rivet 237 may be fastened as shown in FIG. 4. It is provided with a through hole so that it can be.

In addition, according to the first preferred embodiment of the present invention, the leaf spring 233 may be provided in a hollow disc shape, and the elastic force is applied to the elastic portion 233a between the elastic portions 233a. The slots 233b having a predetermined shape may be provided to enable them. Therefore, the slots 233b are preferably to have a predetermined curvature. According to the first preferred embodiment of the present invention as shown in FIG. 5, the slots 233b are formed to have a double curvature. An extension part 233d corresponding to the shape of the slot 233b is provided between the hollow part 233c of the leaf spring 233 and the slot 233b. The extension part 233d may be provided to have a predetermined elasticity, and the hub coupling part 233f may be provided in the extension part 233d. As such, when the disk 232 and the hub 231 are respectively coupled to the disk coupling part 233e provided in the elastic part 233a and the hub coupling part 233f provided in the extension part 233d, Since the elastic portion 233a and the extension portion 233d have a predetermined elasticity, as shown in FIGS. 3 and 8, the compressor of the vehicle air conditioner is operated to drive the disk 232 to the friction surface of the pulley 214. After being adsorbed, the compressor has elasticity that can be restored to its original position when the compressor is released.

On the other hand, the leaf spring 233 as described above, as shown in Figure 5, the elastic member 234 is provided. The elastic member 234 is interposed between the disk 232 and the leaf spring 233, according to a first preferred embodiment of the present invention, the surface of the leaf spring 233 facing the disk 232 It can be mounted on. In addition, the elastic member 234 according to the present invention may be installed between the disk coupling portion 233e and the hub coupling portion 233f to prevent the compressor from being separated during the high speed rotation of the compressor. That is, even when the centrifugal force acts according to the high speed rotation of the compressor, the disk 232 and the leaf spring 233 are coupled to the outside where the elastic member 234 is installed. It will prevent it from escaping outward.

The elastic member 234 according to the first preferred embodiment of the present invention is mounted on the elastic member coupling portion 233g of the leaf spring 233, as shown in FIGS. Can be. Meanwhile, as shown in FIG. 5, the elastic member coupling part 233g extends from an edge portion of the leaf spring 233 in which the disk coupling part 233e is formed, and as will be described later, It is formed as a through hole so that the bumper portion can be inserted. The elastic member coupling portion 233g may be extended from the center portion of the leaf spring 233, although not shown in the drawing. That is, the portion where the hub coupling portion 233f is formed in the extension portion 233d of the leaf spring 233 extends outward, and the elastic member coupling portion is formed in this portion.

As shown in FIG. 6, the elastic member 234 is mounted to penetrate through the leaf spring 233. At this time, a damper part 234b is provided toward the disk, and a fixing part faces toward the outside. 234a is provided.

As shown in FIG. 6, the fixing part 234a protrudes from the damper part 234b in a mushroom-like shape, and the elastic member 234 is the leaf spring 233 by the fixing part 234a. It is fixed to).

As shown in FIG. 7, the opposite side of the fixing part 234a is provided with a damper part 234b and a bumper part 234e around the damper part 234b. The bumper part 234e is formed in an area corresponding to the extension part 233d of the leaf spring 233, and is formed in an area corresponding to the elastic member coupling part 233g of the spring 233.

As shown in FIG. 7, the damper portion 234b may be provided as a flat portion 234d having a constant thickness in the center thereof, and the bumper portion 234e may have a thickness around the flat portion 234d. It may be provided with an inclined portion provided to gradually become thinner in the direction of the leaf spring. At this time, the flat portion 234d is provided to have a greater thickness than the inclined portion that is the bumper portion 234e. The bumper portion 234e functions to reduce the adsorption noise of the disk when the compressor is turned on and the disk 232 is sucked toward the pulley 214, and the damper portion 234b is turned off to the disk 232. ) Absorbs desorption vibrations when they are released from pulley 214.

That is, as shown in FIG. 5, when the compressor is turned on and the disk 232 is sucked in the direction of the pulley 214, the leaf spring 233 coupled to the disk 232 is the disk engaging portion 233e. Is subjected to a bending force in the direction of the pulley 214, so that the bumper portion 234e placed on the portion corresponding to the extension portion 233d receives a compressive force from the extension portion 233d, thereby reducing disk adsorption noise. It is to let. In addition, when the compressor is turned off, the disk 232 is separated from the pulley 214 and collides with the leaf spring 233. At this time, the damper portion 234b provided with the thick flat portion 234d is a disk. 232 absorbs the vibration that strikes the leaf spring (233).

Meanwhile, the damper part 234b and the bumper part 234e can prevent the elastic member 234 from being separated during the high speed rotation of the compressor pulley. That is, when the compressor is operated and the disk is attracted to the friction surface of the pulley, the edge portion of the leaf spring to which the disk is coupled is compressed in the direction of the pulley, and the elastic member placed between the leaf spring and the disk The bumper portion 234e is subjected to a compressive force. This compression force is directed toward the central portion of the leaf spring due to the thickness variation between the bumper portion 234e and the damper portion 234b. Accordingly, even when the compressor rotates at high speed and centrifugal force acts on the elastic member, the centrifugal force is further relaxed. I can give it.

In addition, as shown in FIGS. 6 and 7, the elastic member 234 may be provided with a deformable portion 234c at a portion mounted to the leaf spring 233. The deformable portion 234c may be provided as a through hole formed to penetrate the bumper portion 234a and the damper portion 234b, and although not shown, a predetermined depth from the bumper portion 234a or the damper portion 234b. It may be provided with a groove formed as. The deformable portion 234c is provided to be deformed in the longitudinal direction of the leaf spring 233 to prevent the elastic member 234 from being separated during the high speed rotation of the compressor pulley. That is, when the centrifugal force is generated by the high speed rotation of the compressor pulley, the deformable portion 234c causes the elastic member 234 to be deformed to some extent by the centrifugal force, thereby preventing the elastic member from being torn or separated. In addition, the deformable portion 234c may be more smoothly mounted when the elastic member 234 is mounted on the elastic member coupling portion 233g of the leaf spring 233.

The elastic member as described above was a case of being detachably inserted into the leaf spring, but the present invention is not necessarily limited thereto, and may be injected in a molding form to the elastic member coupling portion of the leaf spring.

Second Embodiment

FIG. 9 is a front view illustrating the structure of a disc and a hub assembly of an electromagnetic clutch according to a second preferred embodiment of the present invention, and FIG. 10 is a cross-sectional view taken along line D-D 'of FIG.

As can be seen in Figure 10, since the field core assembly 220 and the pulley assembly 210 of the electromagnetic clutch according to the second embodiment of the present invention is the same as the first embodiment described above, a detailed description thereof will be omitted. The disk and hub assembly 240 is described.

9 and 10, the disc and hub assembly 240 of the electromagnetic clutch according to the second preferred embodiment of the present invention is driven by a bolt member 112 on the drive shaft 110 of the compressor body 100. The hub 241 to be fixed, the hollow disk 242 adsorbed or detached from the friction surface of the pulley 214, and the leaf spring 243 for coupling the hub 241 and the disk 242 with each other And an elastic member 244 interposed between the disk 242 and the leaf spring 243 to act as a buffer.

Since the basic structures of the hub 241 and the disk 242 are the same as those of the first preferred embodiment of the present invention described above, a detailed description thereof will be omitted.

9 and 10, the hub 241 is coupled to the leaf spring 243 through the disk 242, and the disk 242 is a sieve leaf spring having an elastic member 244 interposed therebetween. It is coupled to the edge of 243. The hub 241 is fixed to the center of the leaf spring 243 by a hub rivet 247, the disk 242 is a separate elastic ring 246 by a disk rivet 245 at the edge of the leaf spring 243 It is fixed with a sieve through).

The leaf spring 243 according to the second preferred embodiment of the present invention as shown in FIG. 9 is provided with a disk engaging portion 243e to which the disk 242 is coupled along an edge thereof, and at the center thereof the hub ( Hub coupling portion 243f is provided so that 241 can be coupled. According to a preferred embodiment of the present invention, these disk coupling portions 243e and hub coupling portions 243f are the same as those of the first embodiment described above. Likewise, each rivet is provided with a through hole to be fastened.

According to a second preferred embodiment of the present invention, the leaf spring 243 may be provided as an extension portion 243d connecting the hub coupling portion 243f and the disk coupling portion 243e. As can be seen in FIG. 9, the extension part 243d is provided in a hollow triangular shape in which the center part is indented to the center side by a predetermined depth, and at each vertex of the triangular extension part 243d, a disk coupling part 243e is provided. ), A through hole is formed, and a through hole, which is a hub engaging portion 243f, is formed at the center of each side of the triangular extension portion 243d. The leaf spring 243 according to the second preferred embodiment of the present invention is provided with a triangular extension as described above, but the shape of the leaf spring of the present invention is not necessarily limited thereto, and the extension repeats suction and release with the pulley assembly. Any shape can be applied as long as it can give elasticity to the disk.

On the other hand, the leaf spring 243 is provided so that the extension portion 243d has a predetermined elasticity, and the elastic portion 243a is provided inside the disk coupling portion 243e near each vertex to provide a disk 242. Is given elasticity when pulled in the direction of the pulley assembly 210. The elastic function of the leaf spring 243 is also achieved by the portion between the hub engaging portion 243f and the disk engaging portion 243e of the extension portion 243d. That is, since the hub 241 is fixed to the center of each side of the triangular extension part 243d, and the disk 242 is fixed to each vertex, the hub engaging portion 243f of each side to which the hub 241 is fixed The disk coupling portion 243e of each vertex, centering on the circumference thereof, is a structure having a predetermined elasticity in the direction of the pulley assembly 210.

In the leaf spring of this structure, the elastic member coupling portion 243g in which the elastic member 244 is coupled to the edge portion where the disk coupling portion 243e is formed, that is, the portion extending from the vertex to the center side by a predetermined length is provided. Is formed. The elastic member coupling portion 243g is also provided as a through hole so that the elastic member 244 can be inserted therein, and the elastic member 244 is detachably coupled to the elastic member coupling portion 243g. Since the elastic member 244 may be the same as the first embodiment of the present invention, a detailed description thereof will be omitted.

As described above, also in the second embodiment according to the present invention, the elastic member 244 is located between the disk coupling portion 243e and the hub coupling portion 243f, and thus, even when the compressor pulley is rotated at high speed by centrifugal force. Departure to the outside can be prevented, and at the same time noise generated when the compressor is ON / OFF can be reduced.

Meanwhile, as shown in FIGS. 11 and 12, the leaf spring 243 having the above structure further forms a separate coupling hole 243h between the disk coupling portion 243e and the elastic member coupling portion 243g. can do. This coupling hole 243h makes the elastic portion 243a more flexible and the damper portion 244b of the elastic member 244 is excessively deformed when the air conditioner is turned on, that is, when the compressor is turned on. To prevent them.

In addition, as shown in FIGS. 13 and 14, the auxiliary fixing part 244f separately provided in the elastic member 244 may be fastened to the coupling hole 243h as described above. The auxiliary fixing part 244f is formed in the shape of a mushroom protrusion from the outside of the elastic member 244, and is fastened to the coupling hole 243h of the leaf spring 243 to more firmly bind the elastic force of the elastic member 244. It is possible to prevent the elastic member 244 from being eccentric and / or rotated due to friction with the pulley assembly when the compressor is ON / OFF.

Meanwhile, the auxiliary fixing part fastened to the coupling hole 243h may be provided as a fixing protrusion 244g as shown in FIGS. 15 and 16. As shown in FIGS. 15 and 16, the fixing protrusion 244g is formed to have a volume almost equal to that of the fixing portion 244a, so that the coupling of the elastic member can be more firmly performed.

At this time, a separate slot 243i may be further formed around the elastic member engaging portion 243g of the leaf spring 243, and the elastic portion 243a is more flexible by the slot 243i. It has elasticity, and as described above, the damper portion 244b of the elastic member 244 can be prevented from being excessively deformed when the compressor is turned on.

Third Embodiment

FIG. 17 is a front view illustrating the structure of a disc and a hub assembly of the electromagnetic clutch according to the third preferred embodiment of the present invention, and FIG. 18 is a cross-sectional view taken along line H-H 'of FIG. 19 and 20 are front and rear views showing an embodiment of the elastic member that can be provided in the third preferred embodiment of the present invention, respectively.

As can be seen in Figure 17, the field core assembly 220 and the pulley assembly 210 of the electromagnetic clutch according to the third preferred embodiment of the present invention is the same as the first and second embodiments described above, the detailed description Is omitted, the disk and hub assembly 250 will be described.

17 and 18, the disc and hub assembly 250 of the electromagnetic clutch according to the third preferred embodiment of the present invention is driven by the bolt member 112 on the drive shaft 110 of the compressor body 100. A fixed hub 251, a hollow disk 252 that is adsorbed or detached from the friction surface of the pulley 214, and a leaf spring 253 connecting the hub 251 and the disk 252 to each other; Interposed between the disk 252 and the leaf spring 253 is provided with an elastic member 254 for a buffer action.

Since the basic structures of the hub 251 and the disk 252 are the same as those of the first and second preferred embodiments of the present invention described above, a detailed description thereof will be omitted.

As shown in FIGS. 17 and 18, the hub 251 penetrates the disk 252 and is coupled to the leaf spring 253, and the disk 252 is a sieve leaf spring having an elastic member 254 interposed therebetween. 253 is coupled near the edge. The hub 251 is fixed to the center of the leaf spring 253 by a hub rivet 257, the disk 252 is a separate elastic ring 256 by a disk rivet 255 on the edge of the leaf spring 253 It is fixed with a sieve through).

17, the leaf spring 253 according to the third preferred embodiment of the present invention is provided with a disk coupling portion 253e to which the disk 252 is coupled along an edge thereof, and at the center thereof the hub ( Hub coupling portion 253f is provided so that 251 can be coupled. According to a preferred embodiment of the present invention, these disk coupling portions 253e and hub coupling portion 253f are the first and second described above. As in the embodiment, each rivet is provided with a through hole to be fastened.

According to a third preferred embodiment of the present invention, the leaf spring 253 may be provided as an extension portion 253d connecting the hub coupling portion 253f and the disk coupling portion 253e. As can be seen in Figure 17, the extension portion 253d is provided in a hollow triangular shape in which the central portion is indented to the center side by a predetermined depth, and the disk coupling portion 253e at each vertex of the triangular extension portion 253d. A phosphorus through hole is formed, and a through hole, which is a hub engaging portion 253f, is formed in the center of each side of the triangular extension portion 253d. The leaf spring 253 according to the third preferred embodiment of the present invention is provided with a triangular extension as described above, but as described above, the shape of the leaf spring of the present invention is not necessarily limited thereto, and the extension may be provided with a pulley assembly. Any shape can be applied as long as it can give elasticity to the disk that repeats adsorption and release.

On the other hand, the leaf spring 253 is provided so that the extension portion 253d has a predetermined elasticity, and the elastic portion 253a is provided inside the disk coupling portion 253e near each vertex to provide a disk 252. Is given elasticity when pulled in the direction of the pulley assembly 210. The elastic function of the leaf spring 253 is also achieved by the portion between the hub coupling portion 253f and the disk coupling portion 253e of the extension portion 253d. That is, since the hub 251 is fixed to the center of each side of the triangular extension part 253d, and the disk 252 is fixed to each vertex, the hub coupling part 253f of each side to which the said hub 251 is fixed The disk coupling portion 253e at each vertex, centered on the square, has a predetermined elasticity in the direction of the pulley assembly 210.

In the leaf spring of such a structure, an auxiliary extension extending from the center of the leaf spring outward from the hollow portion 253c of the leaf spring 253, that is, from the portion between the respective hub coupling portions 253f. A portion 253i is provided, and the auxiliary extension portion 253i is provided with an elastic member coupling portion 253g and an auxiliary coupling portion 253h in the direction from the outside to the center portion. Both the elastic member coupling portion 253g and the auxiliary coupling portion 253h may be provided as through holes.                     

As shown in FIG. 18, the elastic member 254 fastened to the auxiliary extension part 253i of the leaf spring 253 is formed to penetrate the elastic member coupling part 253g, and the fixing part 254a and the damper part. The structure provided with 254b, the bumper part 254e, and the deformation | transformation part 254c is the same as that of the case of the 1st and 2nd embodiment mentioned above. However, unlike the above-described embodiments, the elastic member 254 according to the third embodiment of the present invention as shown in FIGS. 17 to 20 has a hollow portion () of the leaf spring 253 in the damper portion 254b. The auxiliary damper portion 254g extends further in the direction toward 253c, and the mushroom-protruding auxiliary fixing portion 254h is further extended from the auxiliary damper portion 254g to penetrate the auxiliary coupling portion 253h of the leaf spring. It is provided. The auxiliary fixing part 254h is provided with a fixing protrusion and is coupled to the auxiliary coupling part 253h of the leaf spring, thereby further increasing the coupling force of the elastic member 254 to the leaf spring 253. The auxiliary damper portion 254g may further increase the effect of absorbing the detachable vibration of the disk when the compressor is turned off.

19 and 20, the damper portion 254b and the auxiliary damper portion 254g are formed by a flat portion 254d configured to be flat, and the periphery of the flat portion 254d. The inclined portion, that is, the bumper portion 254e is provided with a thinner thickness than this. In this case, the flat portion 254d is formed to correspond to the auxiliary extension portion 253i, which is a portion where the elastic member 254 is fastened to the leaf spring 253.

On the other hand, the auxiliary damper portion 254g is provided so that its width gradually becomes thinner in the direction toward the hollow portion 253c of the leaf spring 253 so that the disk 252 is attracted to the friction surface of the pulley according to the operation of the compressor. In this case, the compressive force can be directed in the direction of the bumper portion 254e. When the centrifugal force acts according to the high speed rotation of the compressor, the auxiliary fixing part 254h and the auxiliary damper part 254g pull the elastic member 254 in the direction opposite to the centrifugal force, and have a deformation part 254c. The damper part 254b and the fixing part 254a prevent the separation of the elastic member.

As described above, also in the third embodiment according to the present invention, the elastic member 254 is located between the disk coupling portion 253e and the hub coupling portion 253f. Departure to the outside can be prevented, and at the same time noise generated when the compressor is ON / OFF can be reduced.

Meanwhile, as shown in FIGS. 21 and 22, the leaf spring 253 having the above-described structure has a shape such that a wider portion of each vertex of the extension portion 253d having the disk coupling portion 253e is formed. It can be applied to various modifications.

In addition, the hub coupling portion 253f can be moved by a predetermined angle from the center of each side of the triangular extension portion 253d, which is equally applicable to the above-described first and second embodiments. .

In addition, the shape of the elastic member 254 and also the bumper portion 254e is formed in a butterfly shape that extends in both directions from the center portion formed with the fixing portion 254a and the damper portion 254b plate spring 253 And the friction surface of the disk 252 can be reduced.

According to the present invention as described above, the following effects can be obtained.                     

First, the compressor is turned on and off using an elastic member having a bumper portion for reducing the noise that the disk strikes the friction surface of the pulley when the compressor is turned on and a damper portion for reducing the noise that the disk strikes the leaf spring when the compressor is turned off. Noise at OFF can be reduced.

Second, by providing a detachable elastic member used in the disk and hub assembly, the assembly is excellent, there is no need to directly mold the elastic member to the disk and hub assembly, the cost is reduced, and the manufacturing process can be simplified. .

Third, even if the elastic member is detachably provided, it is possible to prevent the elastic member from being separated during the high speed rotation of the compressor.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

Claims (13)

A field core assembly in which an electromagnetic coil is embedded to generate an electromagnetic force; A pulley assembly having a pulley provided at an outer circumference thereof; A hollow disk adsorbed or detached from the friction surface of the pulley by the action of the electromagnetic coil; A hub connected to the drive shaft of the compressor through the disk; A leaf spring having at least two elastic parts, at least two disk coupling parts to which the disk is coupled along an edge, and a central spring having at least two hub coupling parts to which the hub is coupled; And It is interposed between the disk and the leaf spring, and an elastic member provided between the disk coupling portion and the hub coupling portion; The leaf spring is provided with an elastic member coupling portion on which the elastic member is mounted, the elastic member coupling portion extends from an edge portion or a central portion of the leaf spring, The elastic member is mounted to penetrate the leaf spring, the damper portion is provided to absorb the vibration between the disk and the leaf spring in the direction of the disk, the bumper buffers the force adsorbed on the friction surface of the pulley Electronic clutch, characterized in that provided with. The method of claim 1, The leaf spring is provided in a hollow disc shape, slots are provided between the elastic portions to impart an elastic force to the elastic portion, Between the hollow portion of the leaf spring and the slot is provided with an extension corresponding to the shape of the slot and having elasticity, The hub coupling portion is provided with an extension of the leaf spring. delete delete The method of claim 1, The leaf spring is provided with an extension portion which connects the hub coupling portion and the disk coupling portion and has elasticity, And the leaf spring is formed hollow. delete delete delete delete The method of claim 1, The damper portion is provided with a flat portion having a constant thickness thereof, and the bumper portion is provided with an inclined portion provided so that the thickness gradually toward the leaf spring. delete The method of claim 1, The elastic member is provided with a deformable portion that can be deformed in the longitudinal direction of the leaf spring in the portion mounted to the elastic member coupling portion, And the deformable portion is provided with a hole or a groove formed in a thickness direction in a portion of the elastic member mounted to the elastic member coupling portion. delete

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