CN203114894U - Thrust ball bearing - Google Patents
Thrust ball bearing Download PDFInfo
- Publication number
- CN203114894U CN203114894U CN 201320064109 CN201320064109U CN203114894U CN 203114894 U CN203114894 U CN 203114894U CN 201320064109 CN201320064109 CN 201320064109 CN 201320064109 U CN201320064109 U CN 201320064109U CN 203114894 U CN203114894 U CN 203114894U
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- China
- Prior art keywords
- thrust ball
- ball bearing
- rolling groove
- balls
- axle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Compressor (AREA)
Abstract
The utility model relates to a thrust ball bearing capable of preventing a holder from being contacted with a shaft to further realize long service life of the thrust ball bearing. The thrust ball bearing (30) comprises a pair of races (31, 32), a plurality of balls (33) and the holder (34), wherein the races (31, 32) are round-ring-shaped, separated from each other axially and arranged in parallel; the balls (33) are capable of rolling freely and arranged between the races (31, 32); the holder (34) is arranged between the races (31, 32) and enables the balls (33) to be arranged at equal intervals; at least one rolling groove (31a, 32a) connected with the balls (33) is arranged on at least one rack of the racks (31, 32); the radius of the rolling groove (31a, 32a) is set to be more than 60% of the diameter (D) of the balls(33); and the depth (H) of the rolling groove (31a, 32a) is set to be less than 60 microns.
Description
Technical field
The present invention relates to a kind of thrust ball bearing, more specifically, relate to a kind of thrust ball bearing of the hermetic compressor for fridge-freezer, air-conditioning etc.
Background technique
For can be in response to environmental policy in recent years, the high efficiency of aspect such as that the hermetic compressor of fridge-freezer, air-conditioning etc. is required is low in power consumption, antinoise.As its countermeasure one the ring, supporting compressor the axle and make this part that can rotate freely, adopted thrust ball bearing.By adopting thrust ball bearing in this part, improved verticity, and then improved the efficient of compressor.
Then, with reference to Fig. 3, the existing thrust ball bearing 50 of the hermetic compressor that is used for fridge-freezer, air-conditioning etc. is described.This thrust ball bearing 50 has: a counter race (race) 51,52 in the form of a ring, and this counter race is separated from each other and parallel configuration vertically; Be disposed between the counter race 51,52, can a plurality of balls 53 of free rolling; Be configured between the counter race 51,52, a plurality of balls are controlled be equally spaced retainer 54 roughly.In addition, a counter race 51,52 forms by flat board.Therefore, a counter race 51 that joins with a plurality of balls 53,52 rolling surface 51a, 52a form flat condition respectively.
And, supporting at thrust ball bearing 50 under the situation of axle of compressor, retainer 54 is by 53 guiding of a plurality of balls, but because rolling surface 51a, 52a are even shape, thereby retainer 54 finally can be coupling tactilely with this, so that involves and circles round.At this moment, under the interaction of retainer 54 and a plurality of balls 53, will hinder normal rotation and the revolution of a plurality of balls 53, and between a plurality of balls 53 and rolling surface 51a, 52a, skid.And this generation of skidding and seat ring 51,52 advanced wear are relevant, and its result produces noise and inefficiency when causing the bearing rotation, the possibility that exists compressor reliability to reduce.
For this reason, as prior art, known have by making a plurality of balls interconnected along circumferencial direction two row of seat ring, with the long-life technology (for example with reference to patent documentation l) that realizes high rigidity and bearing.In addition, known predetermined axial clearance is set between axle and seat ring in addition, make this axial clearance form the stream of lubricant oil, the supply of the lubricant oil of moistening, and the low noiseization when realizing the bearing rotation and the technology (for example with reference to patent documentation 2) of high efficiency.In addition, knownly be made as m(g in the weight with each ball in addition), ball quantity is made as z(), the rolling diameter of ball is made as d(mm), the maximum speed of axle is made as n(r/s), the load that puts on the gravitational direction of thrust ball bearing is made as Fa(N) time, satisfy Fa＞2.0 * 10 by making these numerical value
-3The relation of mZdn reduces the technology of skidding, prevent wearing and tearing (for example with reference to patent documentation 3) of ball.In addition, the known setting in addition along the elastic bearing component of gravitational direction supporting thrust ball bearing, contact load when suppressing thus to be subjected to external force between seat ring and the ball, the low noiseization when realizing the bearing rotation and the technology (for example with reference to patent documentation 4) of high efficiency.
Technical paper formerly
Patent documentation 1: Japanese kokai publication hei 08-320018 communique
Patent documentation 2: TOHKEMY 2010-255556 communique
Patent documentation 3: TOHKEMY 2008-121628 communique
Patent documentation 4: TOHKEMY 2010-101278 communique
Summary of the invention
The problem that invention will solve
But above-mentioned patent documentation 1～4 all is need prepare member separately or implement novel processing etc. and cause baroque technology, and manufacture cost is risen.In addition, above-mentioned patent documentation 1～4 prevent retainer and be coupling tactile aspect, concrete solution is not all proposed.
The present invention makes in view of above-mentioned problem exactly, and its purpose is, provides a kind of and can prevent contacting of retainer and axle, can realize the thrust ball bearing of bearing long lifetime.
Solve the means of problem
Above-mentioned purpose of the present invention realizes by following structure.
(1) a kind of thrust ball bearing is characterized in that, has: be separated from each other vertically and parallel configuration be a circular counter race; Be disposed between the counter race, can a plurality of balls of free rolling; And be configured between the counter race, a plurality of balls are controlled be equally spaced retainer roughly, on one of them seat ring of a counter race, at least be provided with one and the contacted rolling groove of ball, the radius of rolling groove is set at more than 60% of ball diameter, and the degree of depth of rolling groove is set at below the 60 μ m.
(2) according to above-mentioned (1) described thrust ball bearing, it is characterized in that, when counter race carries out punch process, form rolling groove simultaneously.
(3) according to above-mentioned (1) or (2) described thrust ball bearing, it is characterized in that, use in the compressor of above-mentioned thrust ball bearing in being built in fridge-freezer or air-conditioning.
The effect of invention
According to thrust ball bearing of the present invention, on one of them seat ring of a counter race, at least be provided with one and the contacted rolling groove of ball, the radius of rolling groove is set at more than 60% of ball diameter, and the degree of depth of rolling groove is set at below the 60 μ m, therefore, the scrolling position of ball is subjected to the restriction of rolling groove, can prevent that the retainer that is guided by ball from coming in contact with axle.Can prevent from thus skidding between ball and the seat ring, and prevent that seat ring from wearing and tearing, therefore, can realize the long lifetime of thrust ball bearing.
In addition, according to thrust ball bearing of the present invention, when counter race carries out punch process, form rolling groove simultaneously, therefore can suppress the rising of manufacture cost.
Description of drawings
Fig. 1 is the sectional view of compressor that has used a mode of execution of thrust ball bearing of the present invention for explanation.
Fig. 2 is the amplification view for explanation thrust ball bearing shown in Figure 1.
Fig. 3 is the amplification view for the existing thrust ball bearing of explanation.
Symbol description
10 compressors
30 thrust ball bearings
31 top races
The 31a rolling groove
32 bottom races
The 32a rolling groove
33 balls
34 retainers
The radius of R rolling groove
The degree of depth of H rolling groove
The diameter of D ball
Embodiment
Below, with reference to the accompanying drawings, describe the compressor of a mode of execution that has used thrust ball bearing of the present invention in detail.
As shown in Figure 1, the compressor 10 of present embodiment has seal container 11, and the structure of drive system etc. is arranged for seal container 11 internal configurations.In seal container 11 inside, be provided with: have the refrigerant that the rotary driving part 14 of stator 12 and rotor 13 and the action by rotary driving part 14 produce compression or expand (for example gas refrigerant etc.) etc.In addition, compressor 10 is built within fridge-freezer or the air-conditioning etc.
Side position on the top of axle 15 is provided with cylinder block 20.Cylinder block 20 has roughly cylindrical circular pressing chamber 21.In this pressing chamber 21, intercalation has can free pistons reciprocating 22.In addition, piston 22 utilizes between connector element 23 and the eccentric axial portion 18 and is connected.
And the main shaft part 16 of axle 15 is passed main bearing 19 along the vertical direction.In addition, between the upper surface of the lower surface of the lip part 17 of axle 15 and main bearing 19, dispose thrust ball bearing 30.Support axle 15 thus, and axle 15 can be rotated freely, and supporting the load (deadweight) of the gravitational direction of axle 15 and rotor 13.
As shown in Figure 2, thrust ball bearing 30 has: be separated from each other vertically and parallel configuration be circular a pair of upper and lower seat ring 31,32 up and down; Be disposed between the bottom race 31,32, can a plurality of balls 33 of free rolling; And be configured between the upper and lower seat ring 31,32, a plurality of balls 33 are controlled be equally spaced retainer 34 roughly, thrust ball bearing 30 and main shaft part 16 Spielpassung.In addition, in the present embodiment, last bottom race 31,32 and a plurality of ball 33 be made of metal.In addition, the bearing space that is mixed with between the above bottom race 31 of refrigerant, 32 that lubricates composition is circulating path.
As mentioned above, thrust ball bearing 30 according to present embodiment, at last bottom race 31,32, be respectively equipped with and ball 33 contacted rolling groove 31a, 32a, the radius R of rolling groove 31a, 32a is set at more than 60% of ball 33 diameter D, the depth H of rolling groove 31a, 32a is set at below the 60 μ m, therefore, the scrolling position of ball 33 is subjected to the restriction of rolling groove 31a, 32a, can prevent that the retainer 34 that is guided by ball 33 from coming in contact with axle 15.Can prevent from thus skidding between ball 33 and the seat ring 31,32, and prevent that seat ring 31,32 from wearing and tearing, therefore, can realize the long lifetime of thrust ball bearing 30.
In addition, according to the thrust main bearing 30 of present embodiment, when counter race 31,32 carries out punch process, form rolling groove 31a, 32a simultaneously, thereby can suppress the rising of manufacture cost.
In addition, the present invention is not limited to the illustrational content of above-mentioned mode of execution, in the scope departing from aim of the present invention not, can suitably change.
For example, in the above-described embodiment, understand that for example the rolling groove number is the situation of row, but be not limited to this that raceway groove number also can be the above multiple rows of two row.
In addition, in the above-described embodiment, understand that for example seat ring all is formed with the situation of rolling groove up and down, but be not limited to this, also can be only form rolling groove at one of them seat ring of last bottom race.
Claims (5)
1. thrust ball bearing is characterized in that having:
One counter race, a described counter race all is circular, and a described counter race is separated from each other and parallel configuration vertically;
A plurality of balls, described a plurality of balls are disposed between the described counter race, can freely roll; With
Retainer, described retainer are disposed between the described counter race, described a plurality of balls controlled to uniformly-spaced,
On one of them seat ring of a described counter race, be provided with one and the contacted rolling groove of described ball at least,
The radius of described rolling groove is set at more than 60% of described ball diameter,
And the degree of depth of described rolling groove is set at below the 60 μ m.
2. thrust ball bearing according to claim 1 is characterized in that, a described counter race is respectively equipped with a described rolling groove.
3. thrust ball bearing according to claim 1 is characterized in that, the axle of described thrust ball bearing supporting compressor can rotate freely described axle, and the load that is supporting axle and be fixed on the gravitational direction of the rotor on the axle.
4. thrust ball bearing according to claim 1 is characterized in that, described thrust ball bearing is configured between the upper surface of the lower surface of lip part of axle of compressor and the main bearing that passed by axle along the vertical direction.
5. according to each described thrust ball bearing of claim 1～4, it is characterized in that, use in the compressor of described thrust ball in being built in fridge-freezer or air-conditioning.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-022185 | 2012-02-03 | ||
| JP2012022185A JP2013160291A (en) | 2012-02-03 | 2012-02-03 | Thrust ball bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203114894U true CN203114894U (en) | 2013-08-07 |
Family
ID=48895244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320064109 Expired - Fee Related CN203114894U (en) | 2012-02-03 | 2013-02-04 | Thrust ball bearing |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2013160291A (en) |
| CN (1) | CN203114894U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314788A (en) * | 2014-09-01 | 2015-01-28 | 黄石东贝电器股份有限公司 | Thrust track bearing for refrigeration compressor |
| CN105518299A (en) * | 2013-09-03 | 2016-04-20 | 松下知识产权经营株式会社 | Sealed compressor and freezer device or refrigerator equipped with same |
| CN105987073A (en) * | 2015-02-06 | 2016-10-05 | 舍弗勒技术股份两合公司 | Thrust ball bearing |
| CN106662092A (en) * | 2015-08-25 | 2017-05-10 | 松下知识产权经营株式会社 | Enclosed compressdor and refrigeration device |
| CN108194501A (en) * | 2017-12-20 | 2018-06-22 | 苏州静然克精密机械有限公司 | A kind of shaft mounting device |
| CN114263599A (en) * | 2021-11-30 | 2022-04-01 | 西安红庆机械厂 | Helical gear pump with axial play compensation and method for reducing wear thereof |
-
2012
- 2012-02-03 JP JP2012022185A patent/JP2013160291A/en active Pending
-
2013
- 2013-02-04 CN CN 201320064109 patent/CN203114894U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105518299A (en) * | 2013-09-03 | 2016-04-20 | 松下知识产权经营株式会社 | Sealed compressor and freezer device or refrigerator equipped with same |
| CN105518299B (en) * | 2013-09-03 | 2019-06-21 | 松下电器制冷装置新加坡 | Hermetic type compressor and the freezer or refrigerating plant for being mounted with the compressor |
| US11236740B2 (en) | 2013-09-03 | 2022-02-01 | Panasonic Appliances Refrigeration Devices Singapore | Sealed compressor and freezer device or refrigerator equipped with same |
| CN104314788A (en) * | 2014-09-01 | 2015-01-28 | 黄石东贝电器股份有限公司 | Thrust track bearing for refrigeration compressor |
| CN105987073A (en) * | 2015-02-06 | 2016-10-05 | 舍弗勒技术股份两合公司 | Thrust ball bearing |
| CN106662092A (en) * | 2015-08-25 | 2017-05-10 | 松下知识产权经营株式会社 | Enclosed compressdor and refrigeration device |
| CN106662092B (en) * | 2015-08-25 | 2018-03-09 | 松下知识产权经营株式会社 | Hermetic type compressor and refrigerating plant |
| CN108194501A (en) * | 2017-12-20 | 2018-06-22 | 苏州静然克精密机械有限公司 | A kind of shaft mounting device |
| CN114263599A (en) * | 2021-11-30 | 2022-04-01 | 西安红庆机械厂 | Helical gear pump with axial play compensation and method for reducing wear thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2013160291A (en) | 2013-08-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20220204 |