CN1089137C

CN1089137C - Bearing jointing structure of sealed compressor

Info

Publication number: CN1089137C
Application number: CN97122102A
Authority: CN
Inventors: 李炳圭
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 1997-11-11
Filing date: 1997-11-11
Publication date: 2002-08-14
Anticipated expiration: 2017-11-11
Also published as: CN1217431A

Abstract

The present invention relates to a bearing connecting structure of a sealed compressor, which comprises a frame component of an integral cylinder which is provided with an opening on the center part of the frame component and also comprises a journal bearing, wherein internal threads are arranged on the internal periphery surface of the opening; external threads are arranged on the external periphery surface on the upper part of the journal bearing, and the shape of the lower part of the journal bearing is a polygon which can be cylindrical, quadrate or hexagonal. The connecting structure of the bearing can allow that a connecting rod of the compressor connected with a crank shaft is an integral connecting rod. Accordingly, the compression resistant strength and the tensile strength of the connecting rod are increased.

Description

The bearing jointing structure of closed compressor

Technical field

The present invention relates to a kind of closed compressor, in particular, relate to a kind of bearing jointing structure of improved closed compressor, this linkage structure is convenient in cylinder one framing component of integral body and the mounting or dismounting between the shaft bearing.

Background technique

As shown in Figure 1, the closed compressor that a Daepori is logical comprises: a seal container 1 of being made up of upper and lower casing 1a, 1b; With one be arranged in this container 1 electric motor assembly of forming by stator 3a and rotor 3b 3.

The lower end of many support springs 4 is connected on the inner circumference of lower shell body 1b, and a framework 2 is then being supported in its upper end.

The hot fit system of bent axle 5 usefulness that has an eccentric part 6 in the upper end is packed among the rotor 3b.A cylinder 7 is connected the top of framework 2.

A piston reciprocating in cylinder 78 is connected on the eccentric part 5 of above-mentioned bent axle 5.

A valve plate 9 is installed on the end of above-mentioned cylinder 7, and cylinder head 10 then is installed on the valve plate 9.An inhaling silencer (not shown) is installed on the part of above-mentioned cylinder head 10.

See also Fig. 2, cylinder-bearing components that common closed compressor is used comprises framework 2 and shaft bearing 15, and many being aligned with each other all arranged on framework 2 and shaft bearing 15, and the hole that holds screw 16 is so that link together both with screw 16.

Below, the formation of the crankshaft-and-connecting-rod that uses this cylinder-bearing components is described.

As shown in Figure 3, sleeve 12 is fixedly packed in the inner circumference of major part of a connecting rod 11.Crankpin 13 then inserts in the sleeve 12.

Fig. 4 A represents a connecting rod of being made up of two discerptible part 11a, 11b.Among Fig. 4 B the connecting rod of another kind of form, two part 12a wherein, 12b link, for example bolt and clip 14 link together.

But the cylinder-bearing components of this common closed compressor needs tapping procedures to form attachment hole, also needs many screws to fix shaft bearing 15, thereby has increased the quantity and the needed manufacturing procedure of part very unfriendly.

In addition, in the time of on crankshaft-and-connecting-rod being connected this common cylinder-bearing components, also have following various significant disadvantages.

At first, in telescopic cylinder-bearing components shown in Figure 2, owing to used sleeve 12, the diameter of crankpin 13 will be done smallerly, thereby weaken crankpin 13.

In addition,, need many high-precision manufacturing procedures, also need many nonessential auxiliary components simultaneously, such as bolt and clip if during the dismountable connecting rod shown in Fig. 3 A and 3B.

Also have, the connecting rod of this demountable structure also may weaken its intensity of transmitting pressure.

Summary of the invention

Therefore, one object of the present invention just provides a kind of bearing jointing structure of closed compressor, and it is convenient in the cylinder framing component of integral body and the mounting or dismounting between the shaft bearing.

For achieving the above object, according to the present invention, a kind of bearing jointing structure of closed compressor is provided, and this structure comprises: the cylinder-framing component that the integral body in an aperture is partly arranged in the central, and there is internal thread in above-mentioned aperture on the circumferential surface within it; And a shaft bearing, on the external peripheral surface on this shaft bearing top, outside thread is arranged, and the profile of its underpart is cylindrical shape, square or hexagon.

The screw that this bearing jointing structure of the present invention does not need the tapping procedures used for screw and stationary axle journal bearing to use.

As mentioned above, made things convenient for the cylinder-framing component that has internal thread and had assembling and dismounting between the externally threaded shaft bearing, thereby improved the assembly technology performance between these two parts according to the bearing jointing structure of closed compressor of the present invention.

In addition, can also allow that according to the bearing jointing structure of closed compressor of the present invention the connecting rod that is connected with bent axle adopts integral type, thereby have the advantage that makes connecting rod increase resistance to compression and tensile strength.

Brief Description Of Drawings

Below, embodiments of the present invention will be described in detail with reference to the accompanying drawings, but embodiment's purpose is for the present invention is described, rather than restriction the present invention.In the accompanying drawing:

Fig. 1 is the sectional view of existing closed compressor;

Fig. 2 is the stereogram of the connection between existing closed compressor middle frame of explanation and the shaft bearing;

Fig. 3 is the stereogram that is used for the existing bar linkage structure of closed compressor;

Fig. 4 A is a kind of planimetric map of dismountable connecting rod;

Fig. 4 B is the planimetric map of another kind of dismountable connecting rod;

Fig. 5 is according to the stereogram after the decomposition of the cylinder-framing component of integral body of the present invention and shaft bearing;

Fig. 6 A is the stereogram of explanation according to hex-shaped shaft journal bearing of the present invention;

Fig. 6 B is the bottom view of the shaft bearing shown in Fig. 6 A;

Fig. 7 A is the stereogram of explanation according to square axle spindle bearing of the present invention; And

Fig. 7 B is the bottom view of the shaft bearing shown in Fig. 7 A.

Embodiment describes in detail

See also accompanying drawing, the bearing jointing structure according to closed compressor of the present invention is described below.

As shown in Figure 5, this bearing jointing structure according to closed compressor of the present invention comprises the member of being made up of cylinder portion 22 and frame part 20 of an integral body, and the shaft bearing 21 in cylinder-framing component that will be connected above-mentioned integral body.An aperture 20a passes the middle body of the cylinder-framing component of above-mentioned integral body.The outside thread 21a that forms internal thread 20b arranged, so can be screwed in the internal thread of this whole cylinder-framing component on the upper outer circumferential surface of shaft bearing 21 on the inner circumferential surface of aperture 20a.

Shown in Fig. 5,6A, 6B, 7A, 7B, the profile 21b of the bottom of above-mentioned shaft bearing 21 can be columnar, the side, perhaps hexagonal.

Below, the installation step with this bearing jointing structure according to closed compressor of the present invention is described.At first, the aperture 20a of break-through on below and the cylinder-framing component aims at the shaft bearing 21 that has outside thread 21a, then, the outside thread 21a on the shaft bearing 21 is screwed among the aperture 20a on cylinder-framing component; The step that unloads shaft bearing 21 from cylinder-framing component in contrast.

Below, the connection procedure of the bent axle (not shown) in the explanatory drawing 3, rotor (not shown) and connecting rod.

At the beginning, the hole that forms on the shaft bearing 21 is passed in bent axle (not shown) location.Packed in the hole of rotor (not shown) with the mode of shrink fit in the bottom of the bent axle that passes again.Then shaft bearing 21 from the below of aperture 20a is packed whole cylinder-framing component into.

An end of connecting rod (not shown) is connected with the eccentric part of bent axle (not shown), and its another end is connected with the piston (not shown).

Detailed says, above-mentioned shaft bearing 21 is to be screwed in above-mentioned block-head cylinder-framing component in the cylinder 22 of whole cylinder-framing component that the piston (not shown) is packed into.

According to the bearing jointing structure of the present invention, can also use a kind of connecting rod of one except above-mentioned.

Claims

1. the bearing jointing structure of a closed compressor, it comprises:

Cylinder-the framing component that the integral body in an aperture is partly arranged in the central, there is internal thread in above-mentioned aperture on the circumferential surface within it;

And a shaft bearing, on this shaft bearing external peripheral surface at an upper portion thereof outside thread is arranged, and the profile in its underpart is a polygon.

2. bearing jointing structure as claimed in claim 1 is characterized in that, above-mentioned shaft bearing is a cylindrical shape.

3. bearing jointing structure as claimed in claim 1 is characterized in that, above-mentioned shaft bearing is square.

4. bearing jointing structure as claimed in claim 1 is characterized in that, above-mentioned shaft bearing is a hexagon.