CN213088538U

CN213088538U - Scroll compressor protecgulum

Info

Publication number: CN213088538U
Application number: CN202021816877.5U
Authority: CN
Inventors: 孙圣军; 周海山
Original assignee: Hefei Moyan Vortex Technology Co ltd
Current assignee: Hefei Moyan Vortex Technology Co ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2021-04-30
Anticipated expiration: 2030-08-26

Abstract

The utility model discloses a scroll compressor front cover, including front cover body, transmission shaft, bearing, the bearing cover is established on the transmission shaft, the transmission shaft is worn to locate the front cover body, the front cover body inner wall is seted up annular groove, the annular groove is located the bearing outside, the annular groove holds the spacing ring, the matching connection of this spacing ring and the annular groove carries out axial spacing to bearing; a semi-closed cavity for containing lubricating oil is formed between the limiting ring and the needle roller bearing, and the semi-closed cavity is formed by tightly matching the limiting ring, the needle roller bearing and the transmission shaft respectively. The utility model can effectively avoid the axial float of the needle bearing; the semi-sealed cavity can store lubricating oil, so that the needle roller bearing is always in an oil lubricating state; the limiting ring adopts a metal rubber composite body, and the rubber surface is in contact with the annular groove, so that the vibration and noise of the needle bearing are reduced.

Description

Scroll compressor protecgulum

Technical Field

The utility model relates to a scroll compressor field specifically is a scroll compressor protecgulum.

Background

The front cover of the scroll compressor is a bell-shaped cover body, a transmission shaft penetrating through the front cover is installed in the front cover, a transmission bearing is sleeved on the transmission shaft, and the transmission bearing is divided into a deep groove ball bearing structure and a needle roller bearing structure. In the bearing structure, bearing and protecgulum point riveting fixed connection, but because its radial and protecgulum contact surface are little, bearing receives the axial force in the scroll compressor working process, and protecgulum material is mostly the aluminum alloy, and the axial force effect through long-term accumulation can lead to the protecgulum riveting point not hard up to drop, and bearing takes place the axial float, produces very big noise and leads to the product to become invalid even. When the scroll compressor stops working, the needle roller bearing is in a state of lacking lubricating oil, and the restarting needs a period of time to be carried with the lubricating oil by the refrigerant to enter the bearing for lubrication.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a scroll compressor protecgulum and annex thereof both can prevent that bearing from taking place the axial float, can realize again that bearing keeps the oil lubrication state for a long time.

In order to achieve the above object, the utility model provides a following technical scheme:

a front cover of a scroll compressor comprises a front cover body, a transmission shaft and a needle bearing, wherein the needle bearing is sleeved on the transmission shaft, the transmission shaft penetrates through the front cover body, an annular groove is formed in the inner wall of the front cover body and is located on the outer side of the needle bearing, a limiting ring is accommodated in the annular groove, and the limiting ring is in matched connection with the annular groove to axially limit the needle bearing; a semi-closed cavity for containing lubricating oil is formed between the limiting ring and the needle bearing; the semi-closed cavity is formed by tightly matching the limiting ring, the needle bearing and the transmission shaft respectively.

As a further aspect of the present invention: the limiting ring is a metal rubber composite body, one surface of the limiting ring is a metal body, and the other surface of the limiting ring is a rubber body; one surface of the limiting ring metal body is in contact with the outer side of the needle bearing.

As a further aspect of the present invention: the limiting ring is provided with an opening which is of a crescent structure, and the limiting rings on two sides of the opening are respectively provided with an assembling hole.

As a further aspect of the present invention: the outer diameter of the limiting ring is larger than the inner diameter of the annular groove.

As a further aspect of the present invention: the outer diameter of the limiting ring is larger than that of the needle bearing.

Compared with the prior art, the beneficial effects of the utility model are that: the limiting ring arranged in the utility model can effectively avoid the axial movement of the needle bearing; the limit ring, the transmission shaft and the needle bearing form a semi-sealed cavity for storing lubricating oil, so that the needle bearing is always in an oil lubrication state, and the running stability of the needle bearing is improved; the limiting ring adopts a metal rubber composite body, the rubber surface and the annular groove are in contact to play a role in buffering, the vibration and noise of the needle bearing are reduced, and the service life of the product is prolonged.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is a plan view of the stop collar of the present invention;

FIG. 3 is a diagram showing the relationship between the position of the position-limiting ring and the transmission shaft and the position of the needle bearing of the present invention;

in the figure: 1-a front cover body, 2-a limiting ring, 21-an assembling hole, 3-a needle bearing, 4-a transmission shaft and 5-a semi-closed cavity.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, in an embodiment of the present invention, a front cover of a scroll compressor includes a front cover body 1, a transmission shaft 4, and a needle bearing 3, wherein the needle bearing 3 is sleeved on the transmission shaft 4, the transmission shaft 4 is inserted into the front cover body 1, an annular groove is formed in an inner wall of the front cover body 1, and the annular groove is located outside the needle bearing 3; a limiting ring 2 is accommodated in the annular groove, and the limiting ring is connected with the annular groove in a matching manner to axially limit the needle bearing 3; a semi-closed cavity 5 for containing lubricating oil is formed between the limiting ring 2 and the needle bearing 3; the semi-closed cavity 5 is formed by tightly matching the limiting ring 2, the needle bearing 3 and the transmission shaft 4 respectively.

Specifically, the limiting ring 2 (as shown in fig. 2) is a metal rubber composite body, one surface of which is a metal body, and the other surface of which is a rubber body; one side of the metal body of the limiting ring 2 is in contact with the outer side of the needle bearing 3, and one side of the rubber body is in contact with the front cover body 1. The spacing ring 2 has an opening, is crescent structure, respectively set up an pilot hole 21 on the spacing ring 2 of opening both sides, under the natural state the external diameter of spacing ring 2 is greater than the annular groove internal diameter utilizes the elasticity of metal, insert tweezers and application of force in the pilot hole 21 make two pilot holes 21 be close to each other, thereby make the external diameter of spacing ring 2 reduces to can put into the annular groove in to convenient assembly or take out. The outer diameter of the limiting ring 2 is larger than that of the needle bearing 3 (as shown in figure 3), lubricating oil is stored in a semi-closed cavity 5 which is formed by enclosing a metal surface of the limiting ring 2, a shell of the needle bearing 3 and a shell of the transmission shaft 4, the lubricating oil is communicated with the inside of the scroll compressor, the problem that the lubricating oil is carried by a refrigerant to enter the bearing for lubrication after the restarting is carried out for a period of time is solved, the service life is prolonged, and the noise is reduced.

The utility model discloses novel structure, the operation is stable, the utility model discloses when using, insert in the pilot hole 21 and the application of force makes two pilot holes 21 be close to each other with tweezers, thereby make the diameter of spacing ring 2 reduces, puts into spacing ring 2 in the annular groove, make the one side of the metal body of spacing ring 2 with bearing 3 contacts and can accomplish the assembly.

Although the present description is described in terms of embodiments, not every embodiment includes only a single embodiment, and such description is for clarity only, and those skilled in the art should be able to integrate the description as a whole, and the embodiments can be appropriately combined to form other embodiments as will be understood by those skilled in the art.

Therefore, the above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application; all changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. A scroll compressor front cover comprises a front cover body (1), a needle bearing (3) and a transmission shaft (4), wherein the needle bearing (3) is sleeved on the transmission shaft (4), and the transmission shaft (4) penetrates through the front cover body (1), and is characterized in that an annular groove is formed in the inner wall of the front cover body (1), the annular groove is located on the outer side of the needle bearing (3), a limiting ring (2) is accommodated in the annular groove, and the limiting ring is connected with the annular groove in a matching manner to axially limit the needle bearing (3); a semi-closed cavity (5) for containing lubricating oil is formed between the limiting ring (2) and the needle roller bearing (3), and the semi-closed cavity (5) is formed by tightly matching the limiting ring (2), the needle roller bearing (3) and the transmission shaft (4) respectively.

2. The front cover of a scroll compressor as claimed in claim 1, wherein the limiting ring (2) is a metal rubber composite body, one surface of which is a metal body and the other surface of which is a rubber body; one surface of the metal body of the limiting ring (2) is in contact with the outer side of the needle bearing (3).

3. The front cover of a scroll compressor according to claim 2, wherein the limiting ring (2) has an opening in a crescent shape, and the limiting ring (2) on both sides of the opening is provided with a mounting hole (21).

4. A scroll compressor front cover according to claim 3, wherein the outer diameter of the retainer ring (2) is larger than the inner diameter of the annular groove.

5. A scroll compressor front cover according to claim 4, characterized in that the limiting ring (2) has an outer diameter larger than the needle bearing (3).