KR20170042133A - Disc hub assembly and compressor comprising the same - Google Patents

Disc hub assembly and compressor comprising the same Download PDF

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Publication number
KR20170042133A
KR20170042133A KR1020150141683A KR20150141683A KR20170042133A KR 20170042133 A KR20170042133 A KR 20170042133A KR 1020150141683 A KR1020150141683 A KR 1020150141683A KR 20150141683 A KR20150141683 A KR 20150141683A KR 20170042133 A KR20170042133 A KR 20170042133A
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KR
South Korea
Prior art keywords
hub
disk
inner ring
ring
hole
Prior art date
Application number
KR1020150141683A
Other languages
Korean (ko)
Inventor
김승길
손재식
윤덕빈
이동주
이원철
Original Assignee
한온시스템 주식회사
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Priority to KR1020150141683A priority Critical patent/KR20170042133A/en
Publication of KR20170042133A publication Critical patent/KR20170042133A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/005—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
    • F16D27/14—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/26—Refrigerants with particular properties, e.g. HFC-134a
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00—Manufacture
    • F04C2230/60—Assembly methods
    • F04C2230/604—Mounting devices for pumps or compressors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/70—Use of multiplicity of similar components; Modular construction

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

The present invention relates to a disk hub assembly and a compressor including the same, and more particularly, A disk selectively contacting and spacing the drive source of the compressor; And a ring unit having an inner ring fastened to the hub and an outer ring fastened to the disk, wherein the ring unit comprises: a first face opposed to the hub; And a second surface folded from the first surface, the hub including: a contact portion contacting the first surface; And an interference fringe spaced apart from a boundary portion between the first surface and the second surface. Thereby, the ring unit is fastened to the hub at a predetermined position, so that the runout between the disk and the drive source can be improved.

Description

DISC HUB ASSEMBLY AND COMPRESSOR COMPRISING THE SAME Technical Field [1] The present invention relates to a disk hub assembly,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk hub assembly and a compressor including the disk hub assembly, and more particularly, to a disk hub assembly and a compressor including the disk hub assembly of the clutch mechanism, which can selectively connect and disconnect a drive shaft of the compressor .

Generally, a compressor is a device for compressing a fluid such as a refrigerant gas and is applied to, for example, an air conditioner of an automobile.

Such a compressor includes a disk hub assembly of a clutch mechanism portion for selectively connecting and disconnecting a drive shaft to a drive source (for example, a pulley connected to the engine) of the compressor, and selectively outputs power from the drive source As shown in FIG.

1 is a cross-sectional view illustrating a conventional disk hub assembly and a compressor including the same.

1, a conventional compressor includes a casing 1 having an internal space, a compression mechanism (not shown) provided in the internal space of the casing 1, And a driving shaft 4 connected to the driving source 3 and coupled to the compression mechanism to transmit the driving force of the driving source 3 to the compression mechanism (not shown) And a clutch mechanism portion (5) for selectively connecting and disconnecting the driving source (3).

The clutch mechanism unit 5 includes a field coil 5A installed in the driving source 3 and generating a magnetic force when power is applied thereto and a magnetic field generator 5A coupled to the driving shaft 4, And a disk hub assembly (5B) that contacts and separates the drive source (3).

The disc hub assembly 5B includes a hub 51 coupled to the drive shaft 4, a disc 52 selectively contacting and spaced from the drive source 3, and an inner ring 53A And a ring unit 53 having an inner ring 53A and an outer ring 53C fastened to the disk 52. [

Here, the inner ring 53A and the outer ring 53C are joined by the rubber 53B.

The inner ring 53A is formed with a through hole 531d that penetrates the inner ring 53A toward the hub 51 side.

When the field coil 5A is energized, the disk 52 is moved toward the driving source 3 by the suction force of the field coil 5A, .

The power of the driving source 3 is transmitted to the disk 52, the outer ring 53C and the inner ring 53A by coupling the disk 52 and the driving source 3, 51 to the drive shaft 4 of the compressor.

The driving shaft (4) operates the compression mechanism (not shown) with the transmitted power to compress the refrigerant.

On the other hand, when the power supply to the field coil 5A is stopped, the attraction force by the magnetic induction of the field coil 5A is no longer generated, and the elastic repulsive force of the rubber 53B causes the disk 52 Is moved away from the driving source (3) and separated from the driving source (3). That is, power transmission from the drive source 3 to the drive shaft 4 is interrupted.

However, in such a conventional hub 51 disk 52 assembly and a compressor including the same, the ring unit 53 (more precisely, the inner ring 53A) is located at a position deviating from a predetermined position, 51, thereby causing a problem of run-out failure between the disk 52 and the drive source 3.

More specifically, the disk 52 is rotated by inertia upon switching from a connected state (a state where power is applied to the field coil 5A) to a disconnected state (a state where power is not applied to the field coil 5A) , So as not to collide with the driving source (3). Ideally, the friction surface of the drive source 3 (hereinafter referred to as the drive source friction surface 32), which is in contact with the friction surface of the disk 52 (hereinafter referred to as the friction surface of the disk 52) The friction surface of the disk 52 is formed parallel to the driving source friction surface 32 and the friction surface of the disk 52 is formed between the friction surface of the disk 52 and the driving source friction surface 32 The disc 52 does not collide with the driving source 3. [0050] As shown in FIG. However, in reality, the friction surface of the disk 52 and the friction surface of the driving source 32 are not formed as planes (there is roughness) and are not parallel to each other A sufficient clearance must be ensured in order to prevent the disc 52 from colliding with the driving source 3 when the disc 52 is rotated in conjunction with the driving shaft 4 in the blocking state (as it is formed to be inclined with respect to the driving source friction surface 32) . However, when the separation distance between the disk 52 and the driving source 3 increases, when switching from a blocked state to a connected state (a state where power is applied to the field coil 5A) or switching from a connected state to a blocked state The reaction speed of the connection and separation between the disk 52 and the driving source 3 is lowered and the overall size, weight and cost of the disk hub assembly 5B are deteriorated .

Here, the run-out between the disk 52 and the driving source 3 means that the disk 52 is rotated over the entire area of the disk 52 when the disk 52 is rotated from the driving source 3, 52 and the drive source 3 is good, the fact that the run-out is satisfactory means that the uniformity of the distance between the disc 52 and the drive source 3 is high and that the run- The uniformity of the distance between the driving source (52) and the driving source (3) is low. The lower the roughness of each of the friction surfaces of the disk 52 and the driving source friction surface 32 is, the better the runout is, and the more the friction surface of the disk 52 is parallel to the driving source friction surface 32, the better. The risk of collision of the drive source 3 with the disk 52 in the cutoff state is reduced as compared with the case where the runout is poor so that the disk 52 is moved toward the drive source 3 side It can be arranged more closely. That is, the distance between the disk 52 and the driving source 3 can be further reduced.

In the conventional disk hub assembly 5B and the compressor including the same, the hub 51 is inserted into the inner peripheral portion of the through hole 531d when the through hole 531d is formed in the inner ring 53A. A burr (burr) is formed. The burr protrudes from the engagement surface of the inner ring 53A toward the hub 51, and the protrusion length is formed non-uniformly. Thereby, at least a part of the engagement surface of the inner ring 53A is spaced from the engagement surface of the hub 51 by the burr, so that the inner ring 53A is separated from the predetermined position To the hub (51). That is, the relative position of the inner ring 53A with respect to the hub 51 is changed. Thus, the disk 52 fastened to the ring unit 53 is opposed to the driving source 3 at a position deviated from a predetermined position. That is, the relative position of the friction surface of the disk 52 with respect to the driving source friction surface 32 is changed. As a result, a run-out failure occurs between the disk 52 and the driving source 3. If the distance between the disk 52 and the drive source 3 is increased or the distance between the disk 52 and the drive source 3 is increased to prevent the occurrence of a runout failure, ) ≪ / RTI > of the overall size, weight and cost of the product.

Accordingly, it is an object of the present invention to provide a disk hub assembly and a compressor including the disk hub assembly, in which the ring unit is fastened to the hub at a predetermined position to improve the run-out between the disk and the drive source.

In order to achieve the above object, the present invention provides a compressor comprising: a hub coupled to a drive shaft of a compressor; A disk selectively contacting and spacing the drive source of the compressor; And a ring unit having an inner ring fastened to the hub and an outer ring fastened to the disc, wherein the inner ring has: a first surface facing the hub; And a second surface folded from the first surface, the hub including: a contact portion contacting the first surface; And an interference fringe spaced apart from a boundary between the first surface and the second surface.

The second surface may be bent from the first surface to the opposite side of the hub.

The interference fringe skin may be formed so as to overlap the boundary between the first surface and the second surface in the extending direction of the second surface.

The contact portion is in contact with a portion of the first surface remote from the boundary portion between the first surface and the second surface and a boundary portion between the first surface and the second surface may be formed within the range of the interference fringe skin .

The interference fringe may be formed with a sound angular separation surface from the contact surface of the contact portion to the opposite side of the ring unit and the separation surface may be formed to be spaced from the boundary between the first surface and the second surface by a predetermined distance have.

Wherein a burr protruding toward the hub side is formed at a boundary portion between the first surface and the second surface, and the spacing distance is a distance from the boundary portion between the first surface and the second surface to the spaced- May be formed longer than the projecting length of the burr.

The present invention also provides a compressor comprising: a hub coupled to a drive shaft of a compressor; A disk selectively contacting and spacing the drive source of the compressor; And a ring unit having an inner ring fastened to the hub and an outer ring fastened to the disk, wherein the inner ring includes a through hole formed at a portion facing the hub toward the hub side And the hub includes: a contact portion contacting the inner ring; And an interference fringe formed to be engraved from the contact portion to the opposite side of the inner ring, the interference fringe being spaced apart from an inner peripheral portion of the through hole.

The contact portion is brought into contact with the inner ring at a position radially outwardly of the through hole from the through hole, and the inner peripheral surface of the through hole can be formed within the range of the interference skin.

The interference fringe may be formed to be spaced from the inner periphery of the through hole by a predetermined distance.

A burr protruding toward the hub may be formed in the inner peripheral portion of the through hole. The distance between the inner peripheral portion of the through hole and the interference skin may be longer than the protruding length of the bur.

According to another aspect of the present invention, A compression mechanism provided in an inner space of the casing; A drive shaft connected to a drive source provided on the outer side of the casing and a drive shaft coupled to the compression mechanism for transmitting the power of the drive source to the compression mechanism; And a clutch mechanism for selectively connecting and disconnecting the drive shaft and the drive source, wherein the clutch mechanism includes: a field coil installed in the drive source and generating magnetic force when power is applied; And the disc hub assembly coupled to the drive shaft and contacting and spaced from the drive source depending on whether magnetic field is generated by the field coil.

The disk hub assembly and the compressor including the disk hub assembly according to the present invention have the interference fingers in which the hub is separated from the burr portion of the ring unit so that the ring unit is fastened to the hub at a predetermined position, Can be improved. Thereby, it is possible to prevent the collision between the disk and the driving source while reducing the separation distance. Accordingly, it is possible to improve the disk reaction speed, improve the overall size, weight and cost of the disk hub assembly, and improve the productivity by reducing the defective rate due to the run-out failure.

1 is a cross-sectional view of a conventional disk hub assembly and a compressor incorporating it,
FIG. 2 is a cross-sectional view of a disk hub assembly and a compressor including the disk hub assembly according to an embodiment of the present invention. FIG.
3 is a cross-sectional view showing the hub of Fig. 2,
4 is a cross-sectional view of the ring unit of Fig. 2,
FIG. 5 is a cross-sectional view of the disk of FIG. 2,
6 is a cross-sectional view illustrating a disk hub assembly and a compressor including the disk hub assembly according to another embodiment of the present invention.

Hereinafter, a disk hub assembly according to the present invention and a compressor including the same will be described in detail with reference to the accompanying drawings.

FIG. 2 is a cross-sectional view showing a disk hub assembly and a compressor including the disk hub assembly according to an embodiment of the present invention, FIG. 3 is a cross-sectional view showing the hub of FIG. 2, And Fig. 5 is a cross-sectional view showing the disk of Fig.

2 to 5, a compressor according to an embodiment of the present invention includes a casing 1 having an internal space, a compression mechanism (not shown) provided in an internal space of the casing 1, Is connected to a drive source 3 provided on the outside of the casing 1 and the other side is connected to a drive shaft (not shown) coupled to the compression mechanism (not shown) and transmitting the power of the drive source 3 to the compression mechanism 4 and a clutch mechanism 5 for selectively connecting and disconnecting the drive shaft 4 and the drive source 3.

The compression mechanism (not shown) may be formed in various ways, such as a scroll system including orbiting scroll and non-orbiting scroll, and a swash plate system including a swash plate and a piston.

The drive source 3 is rotatably supported on bearings 6 and 6 provided on the outer surface of the casing 1 and connected to a crankshaft (not shown) of the engine by a drive belt (not shown) As shown in Fig.

The pulley is formed in a substantially annular shape, and a drive belt engagement surface 31 on which the drive belt (not shown) is installed is formed on the outer circumferential surface of the pulley, and between the inner peripheral surface of the pulley and the outer surface of the casing 1, The bearings 6 and 6 can be interposed.

A friction surface (hereinafter referred to as a driving source friction surface) 32 capable of coming into contact with a disk 52, which will be described later, is formed on one side of the pulley, and a field coil 5A to be described later is inserted and mounted on the other side of the pulley A field coil mounting groove 33 may be formed.

The clutch mechanism unit 5 includes a field coil 5A installed in the driving source 3 (more precisely, the field coil mounting groove 33) and generating a magnetic force when power is applied thereto, And a disk hub assembly 5B that contacts and separates from the driving source 3 depending on whether a magnetic force is generated by the coil 5A.

The disc hub assembly 5B includes a hub 51 coupled to the drive shaft 4, a disc 52 selectively contacting and spaced from the drive source 3, and an inner ring 53A And a ring unit 53 having an inner ring 53A and an outer ring 53C fastened to the disk 52. [

The disk hub assembly 5B includes a first fastening member 54 for fastening the drive shaft 4 and the hub 51 to each other and a second fastening member 54 for fastening the ring unit 53 to the hub 51. [ Member 55 and a third fastening member 56 for fastening the ring unit 53 and the disk 52 to each other. The first to third fastening members 524, 525, and 526 may be formed of, for example, a bolt or a rivet having a head and a leg.

The hub 51 may include a boss unit 511 into which the driving shaft 4 is inserted and a coupling plate unit 512 extending from the boss unit 511 and opposed to the ring unit 53.

The boss 511 may be formed in an annular shape so as to have a space in which the drive shaft 4 is inserted.

The fastening plate portion 512 may be formed in a disk shape extending from the base of the boss portion 511 in the radial direction of the boss portion 511. Accordingly, the fastening plate portion 512 has a substantially circular upper surface 512a connected to the boss portion 511, an annular outer circumferential surface bent from the outer peripheral portion of the fastening plate portion upper surface 512a And 512c which are bent from the outer circumferential surface 512b of the clamping plate portion and constitute the back surface of the clamping plate upper surface 512a and are opposed to the ring unit 53 (hereinafter referred to as a clamping plate bottom face) 512c ).

The fastening plate portion 512 includes a first fastening hole 512d through which the leg portion of the first fastening member 54 passes and a second fastening hole 512e through which the leg portion of the second fastening member 55 is inserted, ).

The first fastening hole 512d penetrates the fastening plate portion 512 along the axial direction of the fastening plate portion 512 (axial direction of the hub 51) from the center side of the fastening plate portion 512, And may be formed so as to communicate with the inner peripheral portion of the boss portion 511. That is, the first fastening hole 512d may be formed to pass through the fastening plate portion 512 from the fastening plate bottom surface 512c toward the fastening plate upper surface 512a at the center side of the fastening plate portion 512 .

The inner diameter of the first fastening hole 512d is larger than the outer diameter of the leg portion of the first fastening member 54 so that the legs of the first fastening member 54 can pass therethrough. And the inner diameter of the first fastening hole 512d is formed to be equal to the inner diameter of the head of the first fastening member 54 so that the head of the first fastening member 54 can not pass through the first fastening hole 512d. May be formed smaller than the minor diameter.

The second fastening hole 512e extends from the first fastening hole 512d in the axial direction of the fastening plate 512 in the radial direction of the fastening plate 512, Through the fastening plate portion 512, as shown in FIG. That is, the second fastening hole 512e extends from the fastening plate bottom face 512c to the fastening plate top face 512a at a position spaced apart from the first fastening hole 512d in the radial direction of the fastening plate 512 And may be formed to pass through the fastening plate portion 512.

The inner diameter of the second fastening hole 512e is larger than the outer diameter of the leg portion of the second fastening member 55 so that the legs of the second fastening member 55 can pass therethrough. And the inner diameter of the second fastening hole 512e is smaller than the outer diameter of the head of the second fastening member 55 so that the head of the second fastening portion can not pass through the second fastening hole 512e .

The plurality of second fastening holes 512e may be formed at equal intervals along the circumferential direction of the fastening plate 512.

The ring unit 53 includes an inner ring 53A coupled to the hub 51 and an outer ring 53A coupled to the inner ring 53A by a rubber 53B at one side and to the hub 51 at the other side, (53C).

The inner ring 53A is formed in a disk shape and is concentric with the hub 51 and has an inner ring first portion 531 opposed to the hub 51 and an inner ring first portion 531 concentric with the hub 51 from the outer peripheral portion of the inner ring first portion 531 And an inner ring second portion 532 that is bent toward the opposite side of the hub 51 and formed in an annular shape.

The inner ring first portion 531 has a first surface 531a which is a circular surface opposite to the hub 51, a third surface 531c which forms a rear surface of the first surface 531a, And a second surface 531b that is bent from the third surface 531a and the third surface 531c and connects the first surface 531a and the third surface 531c. Here, the second surface 531b may be an inner circumferential surface of a first through hole 531d or an inner circumferential surface of a second through hole 531e described later.

A first through hole 531d through which the first fastening member 54 passes and a second through hole 531e through which the leg of the second fastening member 55 penetrate are formed in the inner ring first portion 531 .

The first through hole 531d may be formed to pass through the inner ring first portion 531 from the center of the inner ring first portion 531 to the hub 51 side. That is, the first through hole 531d extends from the third surface 531c toward the first surface 531a at the center side of the inner ring first portion 531 and the inner ring first portion 531 May be formed to pass through.

The first through hole 531d is formed such that the inner diameter of the first through hole 531d is larger than the inner diameter of the first through hole 531d so that the head and leg portions of the first fastening member 54 can pass through the first through hole 531d. May be formed larger than the outer diameter of the head portion of the first fastening member (54). In this embodiment, the first through hole 531d is formed so that the first fastening member 54 is connected to the head portion of the first fastening member 54 to fasten only the hub 51 and the drive shaft 4, The first fastening member 54 is formed to pass through the inner ring 53A, the hub 51, and the drive shaft 51B, as shown in FIG. 6, 4, the head portion of the first fastening member 54 may be formed so as not to pass through the first through hole 531d. That is, the inner diameter of the first through hole 531d is formed to be equal to the outer diameter of the leg portion of the first fastening member 54, and may be smaller than the outer diameter of the head portion of the first fastening member 54 .

The second through hole 531e extends from the first through hole 531d to the inner ring first portion 531 toward the hub 51 at a position radially distanced from the inner ring first portion 531, As shown in FIG. That is, the second through hole 531e extends from the third surface 531c to the first surface 531c at a position spaced apart from the first through hole 531d in the radial direction of the inner ring first portion 531 531a through the inner ring first portion 531, as shown in FIG.

The inner diameter of the second through hole 531e is larger than the outer diameter of the leg portion of the second fastening member 55 so that the leg of the second fastening member 55 can pass therethrough. And the inner diameter of the second through hole 531e is smaller than the outer diameter of the head portion of the second fastening member 55 so that the head of the second fastening portion can not pass through the second through hole 531e .

The plurality of second through holes 531e may be formed at equal intervals along the circumferential direction of the inner ring first portion 531. The plurality of second through holes 531e may be formed at equal intervals along the circumferential direction of the inner ring first portion 531. [

The outer ring 53C may be formed in an annular shape in which the inner ring 53A is received on the center side of the outer ring 53C.

More specifically, the outer ring 53C is formed in an annular shape having an inner diameter and an outer diameter larger than the outer diameter of the inner ring 53A. The outer ring first portion 533, which is opposed to the disc 52, And an outer ring second portion 534 which is formed in an annular shape bent from the inner periphery of the first portion 533 to the opposite side of the disk 52. [

A third through hole 533a through which the leg of the third fastening member 56 passes may be formed in the outer ring first portion 533.

The third through hole 533a may be formed to penetrate the outer ring first portion 533 toward the disc 52.

The inner diameter of the third through hole 533a is larger than the outer diameter of the leg portion of the third fastening member 56 so that the legs of the third fastening member 56 can pass therethrough. And the inner diameter of the third through hole 533a is smaller than the outer diameter of the head portion of the third fastening member 56 so that the head of the third fastening portion can not pass through the third through hole 533a .

The plurality of third through holes 533a may be formed at regular intervals along the circumferential direction of the outer ring first portion 533.

The outer ring second portion 534 may be formed in an annular shape concentric with the inner ring second portion 532 and opposed to the inner ring second portion 532.

The disk 52 may have an annular shape in which the hub 51 is accommodated in the center side and the outer ring 53C and the driving source friction surface 32 are opposed to each other. That is, the disk 52 has an inner circumferential surface 52a facing the outer circumferential surface of the hub 51, an upper surface 52b bent from the inner circumferential surface 52a of the disk 52b, An outer circumferential surface 52c which is bent from the disk upper surface 52b and forms a back surface of the disk inner circumferential surface 52a and a disk outer circumferential surface 52c which is bent on the disk inner circumferential surface 52a and the disk outer circumferential surface 52c, (Hereinafter, referred to as a disk bottom surface) 52d which forms the back surface of the disk 52b. The disk 52 has a disk inner circumferential surface 52a opposed to the outer circumferential surface of the hub 51 and an upper disk surface 52b opposed to the driving source friction surface 32, And may be formed to face the outer ring 53C. Here, the disk top surface 52b may be a frictional surface of the disk 52 which is selectively in contact with and separated from the driving source frictional surface 32.

In addition, the disk 52 may be provided with a third fastening hole 52e through which the third fastening member 56 is inserted.

The third fastening hole 52e may be formed to penetrate the disk 52 along the axial direction of the disk 52. [ That is, the third fastening hole 52e may be formed to penetrate the disk 52 from the disk bottom surface 52d toward the disk top surface 52b.

The third fastening hole 52e is formed such that the inner diameter of the third fastening hole 52e of the third fastening member 56 is larger than the outer diameter of the leg portion of the third fastening member 56, And the inner diameter of the third fastening hole 52e is smaller than the outer diameter of the head portion of the third fastening member 56 so that the head of the third fastening portion can not pass through the third fastening hole 52e .

The plurality of third fastening holes 52e may be formed at equal intervals along the circumferential direction of the disk 52. In addition,

The disk hub assembly 5B having such a configuration can be assembled as follows.

The driving shaft 4 and the hub 51 are inserted into the boss portion 511 and the leg portion penetrates through the first fastening hole 512d, And the head portion fastened to the front end portion can be fastened to each other by the first fastening member 54 that presses the hub 51 toward the drive shaft 4. [

The hub 51 and the inner ring 53A are formed such that the first surface 531a of the inner ring first portion 531 is in contact with the lower surface 512c of the fastening plate portion of the hub 51, The first through hole 531d of the ring 53A is opposed to the first fastening hole 512d of the hub 51 and the second through hole 531e of the inner ring 53A is fastened to the hub 51 The leg portion is inserted into the second fastening hole 512e of the hub 51 through the second through hole 531e of the inner ring 53A in a state where the leg portion is opposed to the second fastening hole 512e, And the head portion can be fastened to each other by the second fastening member 55 which presses the inner ring 53A toward the hub 51 side.

The inner ring 53A and the outer ring 53C are connected to each other by the rubber 53B which is in close contact with the outer peripheral surface of the inner ring second portion 532 and the inner peripheral surface of the outer ring second portion 534 .

The outer ring 53C and the disk 52 are formed such that the outer ring first portion 533 contacts the bottom surface 52d of the disk and the third through hole 533a of the outer ring 53C contacts the disk The leg portion is passed through the third through hole 533a of the outer ring 53C so as to face the third fastening hole 52e of the disk 52, And the head can be fastened to each other by the third fastening member 56 which presses the outer ring 53C toward the disk 52 side.

Here, the inner ring 53A can be fastened to the hub 51 at a predetermined position by the interference fingers 512B provided in the hub 51, which will be described later.

More specifically, when the first through hole 531d is formed in the inner ring 53A, the inner peripheral portion of the first through hole 531d (the first surface 531a of the inner ring 53A) And a burr protruding toward the hub 51 may be formed at a boundary of the surface 531b.

The burr is an element that interferes with the fastening of the inner ring 53A and the hub 51 so that the inner ring 53A is fastened to the hub 51 at a position where the inner ring 53A is disengaged from a predetermined position. can do. That is, the burr can make the relative position of the inner ring 53A relative to the hub 51 be reversed.

The fastening plate portion 512 of the hub 51 has a contact portion 512A having a contact surface 5121 contacting the first surface 531a of the inner ring 53A and a contact portion 512A having a contact surface 5121 contacting the first surface 531a of the inner ring 53A, (A boundary portion between the first surface 531a and the second surface 531b of the inner ring 53A) of the first through hole 531d from the inner ring portion 5121 toward the opposite side of the inner ring 53A And may include interfering skin 512B having spaced apart spacing 5122.

The contact portion 512A is formed on the inner surface of the inner peripheral portion of the first through hole 531d of the inner surface 53A of the inner ring 53A so that the first surface 531a and the second surface 531b of the inner ring 53A (I.e., a boundary portion between the first and second electrodes). That is, the contact portion 512A is brought into contact with the first surface 531a of the inner ring 53A at a position radially outwardly spaced from the first through hole 531d from the first through hole 531d .

The interference fringe skin 512B is formed so that the inner peripheral portion of the first through hole 531d (the boundary portion between the first surface 531a and the second surface 531b of the inner ring 53A) and the first through hole 531d (The extending direction of the second surface 531b of the inner ring 53A) of the first through hole 531d and the inner circumferential surface of the first through hole 531d and the inner circumferential surface of the inner through hole 531d (The boundary portion between the first surface 531a and the second surface 531b of the first antenna 53A) is accommodated within the range of the interference skin 512B.

The interference fringes 512B are formed on the inner surface of the inner peripheral portion of the first through hole 531d (the first surface 531a of the inner ring 53A) of the first through hole 531d so that the spacing surface 5122 does not interfere with the burr, And the second surface 531b) by a predetermined distance. That is, the interference fringe skin 512B extends from the inner peripheral portion of the first through hole 531d (the boundary portion between the first surface 531a and the second surface 531b of the inner ring 53A) 512B) (more precisely, the spacing surface 5122) may be formed longer than the projecting length of the burr.

The interference fringe skin 512B having such a configuration prevents the burr formed in the inner peripheral portion of the first through hole 531d from interfering with the hub 51, So that it can be fastened to the hub 51 at a determined position. That is, the interference skin 512B can prevent the relative position of the inner ring 53A with respect to the hub 51 from being changed by the burr.

Hereinafter, the operation and effects of the disk hub assembly 5B and the compressor including the disk hub assembly 5B according to the present embodiment will be described.

When the power is applied to the field coil 5A, the disk 52 is moved toward the driving source 3 by the attraction force of the field coil 5A to be brought into close contact with the driving source 3 . That is, the upper surface 52b of the disk (the friction surface of the disk 52) can be brought into close contact with the driving source friction surface 32.

The power of the driving source 3 is transmitted to the disk 52, the outer ring 53C and the inner ring 53A by coupling the disk 52 and the driving source 3, 51 to the drive shaft 4. [0050]

The compression mechanism (not shown) is operated by the power transmitted by the drive shaft 4 to compress the refrigerant.

On the other hand, when power supply to the field coil 5A is stopped, suction force by the magnetic induction of the field coil 5A is no longer generated, and the elastic force of the rubber 53B causes the disk 52 Can be moved away from the driving source (3) and can be separated from the driving source (3). That is, power transmission from the drive source 3 to the drive shaft 4 can be interrupted.

Here, the disk hub assembly 5B according to the present embodiment and the compressor including the disk hub assembly 5B have a structure in which the inner periphery of the first through hole 531d of the inner ring 53A (the inner ring 53A of the inner ring 53A) (Spacing 5122) that is spaced apart from the inner surface of the inner ring 53A (the boundary between the first surface 531a and the second surface 531b) (The boundary between the first surface 531a and the second surface 531b of the inner ring 53A) of the first through hole 531d interferes with a burr formed to protrude toward the hub 51 side Can be prevented. Thus, the inner ring 53A can be fastened to the hub 51 at a predetermined position. That is, the relative position of the inner ring 53A with respect to the hub 51 can be prevented from being changed. The disk 52 fastened to the inner ring 53A through the outer ring 53C and the rubber 53B can be opposed to the driving source 3 at a predetermined position. That is, the relative position of the friction surface of the disk 52 with respect to the driving source friction surface 32 can be prevented from being changed. Preferably, the friction surface of the disk 52 and the friction surface of the driving source 32 are perpendicular to the axial direction of the drive shaft 4 and parallel to each other. Accordingly, the run-out between the disk 52 and the driving source 3 can be well formed. As a result, the distance between the disk 52 and the driving source 3 is reduced while preventing the collision between the disk 52 and the driving source 3, thereby improving the reaction speed of the disk 52, The overall size, weight, and cost of the semiconductor device 5B can be improved, and the productivity can be improved by reducing the defect rate due to the run-out failure.

Meanwhile, in the present embodiment, the interference fringe 512B is formed at a portion of the fastening plate portion 512 of the hub 51 that faces the inner peripheral portion of the first through hole 531d. For example, And may be formed at a portion opposed to the inner peripheral portion of the second through hole 531e as shown in FIG. That is, the inner ring 53A is provided with a first surface 531a and a second surface 531b of the inner ring 53A where burrs may be generated other than the inner peripheral portion of the first through hole 531d ), And the interference fringe skin 512B may be formed on the hub 51 in a portion facing the portion. In this case, the run-out between the disk 52 and the driving source 3 according to the fastening relationship between the inner ring 53A and the hub 51 can be improved.

1: casing 3: driving source
4: drive shaft 5: clutch mechanism portion
5A: Field coil 5B: Disk hub assembly
32: driving source friction surface 51: hub
52: disk 52b: disk top surface, disk friction surface
53: ring unit 53A: inner ring
54: first fastening member 55: second fastening member
56: third fastening member 511: boss portion
512: fastening plate portion 512A:
512B: Interference skin 531: Inner ring first part
531a: first side 531b: second side
531d: first through hole 531e: second through hole
5121: contact surface 5122:
Burr: Burr

Claims (11)

A hub (51) fastened to the drive shaft (4) of the compressor;
A disk (52) selectively contacting and spacing the drive source (3) of the compressor; And
An inner ring 53A fastened to the hub 51 and a ring unit 53 having an inner ring 53A and an outer ring 53C fastened to the disk 52,
The inner ring (53A)
A first surface 531a facing the hub 51; And
And a second surface 531b bent from the first surface 531a,
The hub (51)
A contact portion 512A contacting the first surface 531a; And
And an interference fringe skin (512B) spaced from a boundary between the first surface (531a) and the second surface (531b). The method according to claim 1,
Wherein the second surface (531b) is bent from the first surface (531a) to the opposite side of the hub (51). The method according to claim 1,
Wherein the interference fringe skin 512B overlaps the boundary between the first surface 531a and the second surface 531b in the extending direction of the second surface 531b. The method according to claim 1,
The contact portion 512A contacts a portion of the first surface 531a spaced from the boundary portion between the first surface 531a and the second surface 531b,
A boundary of the first surface (531a) and the second surface (531b) is formed within the range of the interference skin (512B). The method according to claim 1,
A negative angular spacing 5122 is formed in the interference fringe 512B from the contact surface 5121 of the contact portion 512A to the opposite side of the ring unit 53,
Wherein the spacing surface (5122) is spaced a predetermined distance from a boundary of the first surface (531a) and the second surface (531b). 6. The method of claim 5,
Burrs protruding toward the hub 51 are formed at the boundary between the first surface 531a and the second surface 531b,
The spacing distance 5122 is a distance from a boundary between the first surface 531a and the second surface 531b to the spacing 5122 to be longer than a protrusion length of the burr, Assembly 5B. A hub (51) fastened to the drive shaft (4) of the compressor;
A disk (52) selectively contacting and spacing the drive source (3) of the compressor; And
An inner ring 53A fastened to the hub 51 and a ring unit 53 having an inner ring 53A and an outer ring 53C fastened to the disk 52,
The inner ring 53A includes through holes 531d and 531e which are formed in a portion opposed to the hub 51 and pass through toward the hub 51,
The hub (51)
A contact portion 512A contacting the ring unit 53; And
And an interference fringe skin 512B formed on the opposite side of the inner ring 53A from the contact portion 512A and separated from the inner peripheral portion of the through holes 531d and 531e. . 8. The method of claim 7,
The abutting portion 512A is brought into contact with the inner ring 53A at a position radially outwardly spaced from the through holes 531d and 531e from the through holes 531d and 531e,
And the inner circumferential surface of the through hole 531d and 531e is formed within the range of the interference skin 512B. 8. The method of claim 7,
And the interference fringe skin 512B is formed spaced a predetermined distance from the inner periphery of the through holes 531d and 531e. 10. The method of claim 9,
Burrs protruding toward the hub 51 are formed in the inner peripheral portion of the through holes 531d and 531e,
The distance between the inner peripheral portion of the through holes 531d and 531e and the interference skin 512B is longer than the protruding length of the burr. A casing (1) having an internal space;
A compression mechanism (not shown) provided in the inner space of the casing 1;
One side of which is connected to a driving source 3 provided on the outside of the casing 1 and the other side of which is coupled to the compression mechanism portion so as to transmit the power of the driving source 3 to the compression mechanism A driving shaft (4); And
And a clutch mechanism part (5) for selectively connecting and disconnecting the drive shaft (4) and the drive source (3)
The clutch mechanism portion (5)
A field coil (5A) installed in the driving source (3) and generating a magnetic force when power is applied; And
The disk hub assembly (5B) according to any one of claims 1 to 10, wherein the disk hub assembly (5B) is attached to the drive shaft (4) and is contacted with and spaced from the drive source (3) depending on whether magnetic field is generated by the field coil Compressor included.

KR1020150141683A 2015-10-08 2015-10-08 Disc hub assembly and compressor comprising the same KR20170042133A (en)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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