CN108930718A - bearing and motor - Google Patents
bearing and motor Download PDFInfo
- Publication number
- CN108930718A CN108930718A CN201810982792.5A CN201810982792A CN108930718A CN 108930718 A CN108930718 A CN 108930718A CN 201810982792 A CN201810982792 A CN 201810982792A CN 108930718 A CN108930718 A CN 108930718A
- Authority
- CN
- China
- Prior art keywords
- bearing
- inner ring
- intercommunicating pore
- seal
- ring
- 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.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims abstract description 42
- 239000011148 porous material Substances 0.000 claims description 42
- 238000005096 rolling process Methods 0.000 claims description 11
- 239000007787 solid Substances 0.000 claims 1
- 230000002159 abnormal effect Effects 0.000 abstract description 9
- 239000000428 dust Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007592 spray painting technique Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
Classifications
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
- F16C33/7806—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for spherical roller bearings
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/583—Details of specific parts of races
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
- F16C33/782—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region
- F16C33/7823—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region of sealing lips
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7886—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted outside the gap between the inner and outer races, e.g. sealing rings mounted to an end face or outer surface of a race
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention provides a bearing and a motor. The bearing comprises an inner ring (1), an outer ring (2), a front sealing element (3) and a rear sealing element (4), wherein the front sealing element (3) and the rear sealing element (4) are arranged between the inner ring (1) and the outer ring (2) in a sealing mode, the front sealing element (3) is located at the first end of the inner ring (1), the rear sealing element (4) is located at the second end of the inner ring (1), a communication hole (5) is formed in the front sealing element (3) and/or the rear sealing element (4), and the communication hole (5) is used for communicating the inner space and the outer space of the bearing. According to the bearing provided by the invention, abnormal noise of the motor caused by the fact that the inner lip of the sealing element extrudes the dust-proof groove of the inner ring can be effectively avoided.
Description
Technical field
The invention belongs to technical field of motors, and in particular to a kind of bearing and motor.
Background technique
Bearing is one of the mostly important of motor, components the most accurate, it plays the mechanical rotary body of support, reduction turns
Dynamic friction coefficient improves the effects of rotating accuracy；Bearing is also the position for being easiest to break down simultaneously, and most of motor generates
Audible noise abnormal sound is all attributed to the problem of bearing.
Electrical machinery plant, can be by motor stator, rotor assembly to improve production efficiency, simplifying process route when assembling motor
After (band bearing), casing, end cap, fan housing dress complete machine, integral type carries out (120 DEG C) bakings of spray painting high temperature and copies, and avoids seperated spraying (no
Cartridge rotor component) repeatedly dismount the problem for causing production efficiency low；But motor paint-spraying high-temperature baking, after supercooling, bearing is close
Sealing ambient pressure cannot be introduced into inside, cause Bearing inner air pressure lower than external atmosphere pressure, and negative pressure state, sealing is presented in inside
The inner lip of part squeezes at the dustproof groove of inner ring, causes sealing element to contact operating with the dustproof groove of inner ring, motor is easy to appear different
Sound.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is that providing a kind of bearing and motor, sealing element can effectively be avoided
Inner lip squeeze inner ring dustproof groove caused by motor abnormal sound.
To solve the above-mentioned problems, the present invention provides a kind of bearing, including inner ring, outer ring, front seal and rear seal,
Front seal and rear seal are sealingly disposed between inner ring and outer ring, and front seal is located at the first end of inner ring, rear seal
Positioned at the second end of inner ring, intercommunicating pore is provided in front seal and/or rear seal, intercommunicating pore is used to be connected to the inside of bearing
Space and exterior space.
Preferably, the both ends of inner ring include dustproof groove and the sealing bulge loop that dustproof groove outer end is arranged in, and front seal is with after
Sealing element is respectively sleeved at the periphery of corresponding sealing bulge loop, and sealing is formed between dustproof groove.
Preferably, the both ends of outer ring are respectively arranged with shield groove, and front seal includes the first clamping protrusion, preceding sealing
Part is engaged by clamping between the shield groove of first end by the way that the first clamping is raised, and/or, rear seal includes the second clamping
Protrusion, rear seal between the second clamping protrusion and the dust-proof slot cover of second end by being engaged by clamping.
Preferably, intercommunicating pore is fold-line-shaped or curved shape.
Preferably, intercommunicating pore be L shape, the first segment of L shape intercommunicating pore along the axially extending of inner ring, and with the inside of bearing sky
Between be connected to, second segment the radially extending along inner ring of L shape intercommunicating pore, and being connected to the exterior space of bearing.
Preferably, the first port of intercommunicating pore is connected to the inner space of bearing, and the second port of intercommunicating pore is located at preceding close
The radially inner side of sealing.
Preferably, the radially inner side of front seal be provided with annular stop lug, second port be located at stop lug and
Between inner ring.
Preferably, along the direction far from inner ring, the inner ring surface of stop lug is gradually close to the central axis of inner ring.
Preferably, bearing further includes rolling element, and rolling element is arranged in the raceway between outer ring and inner ring.
Preferably, retainer is fixedly installed on the raceway of the axial sides of rolling element.
According to another aspect of the present invention, a kind of motor, including bearing are provided, which is above-mentioned bearing.
Preferably, motor further includes end cap and shaft, and bearing is arranged between end cap and shaft.
Preferably, when bearing is including being provided with stop lug in front seal, the internal ring wall and shaft of stop lug
Between formed contact sealing.
Bearing provided by the invention, including inner ring, outer ring, front seal and rear seal, front seal and rear seal
It is sealingly disposed between inner ring and outer ring, front seal is located at the first end of inner ring, and rear seal is located at the second end of inner ring, preceding
Intercommunicating pore is provided on sealing element and/or rear seal, intercommunicating pore is used to be connected to inner space and the exterior space of bearing.The axis
Hold during processing, can by intercommunicating pore realize bearing interior space and exterior space connection, therefore to bearing into
Row integral type is painted after high-temperature baking, and when bearing cools down, bearing interior space and exterior space can pass through intercommunicating pore reality
Existing inside and outside connection, avoids Bearing inner air pressure from causing inside that negative pressure state is presented lower than external atmosphere pressure, and then avoid sealing
The inner lip of part squeezes motor abnormal sound caused by the dustproof groove of inner ring under the action of pressure difference.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the bearing of the embodiment of the present invention；
Fig. 2 is the partial enlargement structural representation of the bearing of the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the motor of the embodiment of the present invention；
Fig. 4 is the enlarged structure schematic diagram at the Q of Fig. 3.
Appended drawing reference indicates are as follows:
1, inner ring；2, outer ring；3, front seal；4, rear seal；5, intercommunicating pore；6, dustproof groove；7, bulge loop is sealed；8, prevent
Dirt cover slot；9, the first clamping protrusion；10, the second clamping protrusion；11, stop lug；12, rolling element；13, retainer；14, it holds
Lid；15, shaft.
Specific embodiment
In conjunction with referring to FIG. 1 to FIG. 4, according to an embodiment of the invention, bearing includes inner ring 1, outer ring 2, front seal 3
With rear seal 4, the front seal 3 and the rear seal 4 are sealingly disposed between the inner ring 1 and the outer ring 2, institute
The first end that front seal 3 is located at the inner ring 1 is stated, the rear seal 4 is located at the second end of the inner ring 1, described preceding close
Intercommunicating pore 5 is provided on sealing 3 and/or the rear seal 4, the intercommunicating pore 5 is used to be connected to the inner space of the bearing
And exterior space.
The bearing during processing, can realize the connection of bearing interior space and exterior space by intercommunicating pore, because
This is after carrying out integral type spray painting high-temperature baking to bearing, and when bearing cools down, bearing interior space and exterior space can be with
Inside and outside connection is realized by intercommunicating pore, and Bearing inner air pressure is avoided to cause inside that negative pressure state is presented lower than external atmosphere pressure,
The inner lip of sealing element is avoided to squeeze motor abnormal sound caused by the dustproof groove of inner ring 1 under the action of pressure difference in turn.
The intercommunicating pore 5 can be set in front seal 3, also can be set in rear seal 4, can also be arranged simultaneously
In front seal 3 and rear seal 4.
The section of intercommunicating pore 5 is, for example, circle, rectangle, triangle, ellipse or other polygons, when intercommunicating pore 5
Section when being round, the diameter of intercommunicating pore 5 is 0.5mm~1.5mm, it is therefore preferable to 1mm, can be in effectively connection bearing
While portion space and exterior space, water and dust etc. is avoided to enter the inner space of bearing through intercommunicating pore 5.
The both ends of the inner ring 1 include dustproof groove 6 and the sealing bulge loop 7 that 6 outer end of dustproof groove is arranged in, described preceding close
Sealing 3 and the rear seal 4 are respectively sleeved at the periphery of the corresponding sealing bulge loop 7, and the shape between the dustproof groove 6
At sealing.Front seal 3 has internal ring wall, and front seal 3 is sealed by the sealing bulge loop 7 of the first end of internal ring wall and inner ring 1
The sealing cooperation between front seal 3 and inner ring 1 may be implemented in cooperation.The side wall of the end face of front seal 3 and dustproof groove 6 it
Between have certain interval, can be avoided and be in contact between front seal 3 and dustproof groove 6, motor is caused the problem of abnormal sound occur.
Rear seal 4 also has internal ring wall, and rear seal 4 is realized between the sealing bulge loop 7 by the second end of the internal ring wall and inner ring 1
Sealing cooperation.Also be not in contact between the end face of rear seal 4 and the side wall of dustproof groove 6, can be avoided rear seal 4 with it is dust-proof
It is in contact between slot 6, motor is caused the problem of abnormal sound occur.
The both ends of the outer ring 2 are respectively arranged with shield groove 8, and the front seal 3 includes the first clamping protrusion 9,
The front seal 3 between the first clamping protrusion 9 and the shield groove 8 of first end by being engaged by clamping.First card
Connect between the shield groove 8 of the first end of protrusion 9 and outer ring 2 as tight fit, can guarantee the first clamping protrusion 9 and outer ring 2 it
Between seal cooperation, and effective installation positioning can be formed to the first clamping protrusion 9 by the shield groove 8 of outer ring 2, so that preceding
Sealing element 3 can be stably maintained between inner ring 1 and outer ring 2, and structure is more stable.
The rear seal 4 includes the second clamping protrusion 10, and the rear seal 4 passes through the second clamping protrusion 10
It is engaged by clamping between the lid of the dustproof groove 6 of second end, rear seal 4 is enabled to be stably maintained at inner ring 1 and outer ring 2
Between, structure is more stable.
The first port of the intercommunicating pore 5 is connected to the inner space of the bearing, the second port position of the intercommunicating pore 5
In the radially inner side of the front seal 3.
Preferably, the intercommunicating pore 5 is fold-line-shaped or curved shape, on the one hand can reduce the difficulty of processing of intercommunicating pore 5, just
In being processed, on the other hand it can realize what the inner space of bearing was connected to exterior space by the bending of intercommunicating pore 5
Meanwhile reducing a possibility that external impurity etc. enters the inner space of bearing by intercommunicating pore 5, improve the workability of bearing
Energy.
In the present embodiment, the intercommunicating pore 5 is L shape, the axial direction of the first segment of the L shape intercommunicating pore 5 along the inner ring 1
Extend, and be connected to the inner space of the bearing, second segment the radially extending along the inner ring 1 of the L shape intercommunicating pore 5,
And it is connected to the exterior space of the bearing.
Intercommunicating pore 5 or linear, or other shapes.
Preferably, the radially inner side of the front seal 3 is provided with the stop lug 11 of annular, and the second port is located at
Between the stop lug 11 and the inner ring 1.The stop lug 11 can be blocked in external formed of second port, to have
Imitate the inner space for preventing the impurity such as water and dust from entering bearing along intercommunicating pore 5.In general, the stop lug 11 and electricity
The shaft 15 of machine is cooperated, therefore, can make between stop lug 11 and shaft 15 formed contact sealing, thus more added with
Prevent the impurity such as water and dust from reaching at intercommunicating pore 5 by the gap between shaft 15 and front seal 3 to effect, then through being connected to
Hole 5 enters the inner space of bearing.
Preferably, along the direction far from the inner ring 1, the inner ring surface of the stop lug 11 is gradually to the inner ring 1
Central axis it is close, can while forming rotary seal cooperation with shaft 15, reduce stop lug 11 and shaft 15 it
Between contact area, reduce the friction between stop lug 11 and shaft 15, avoid the generation of abnormal sound.
The bearing further includes rolling element 12, and the rolling between the outer ring 2 and the inner ring 1 is arranged in the rolling element 12
In road.
Retainer 13 is fixedly installed on the raceway of the axial sides of the rolling element 12.
In conjunction with referring to FIG. 1 to FIG. 4, according to an embodiment of the invention, motor includes bearing, which is above-mentioned axis
It holds.
Preferably, the motor further includes end cap 14 and shaft 15, and the bearing is arranged in the end cap 14 and described turn
Between axis 15.
Preferably, when the bearing is including being provided with stop lug 11 in front seal 3, the stop lug 11
Formed between internal ring wall and the shaft 15 and contact sealing, so as to by the internal ring wall of stop lug 11 and shaft 15 outside
Contact sealing between peripheral wall, effectively prevent water and dust to enter bearing.Meanwhile in front seal 3 close to the side of shaft 15
Stop lug 11 is set, can also avoid that the shaft shoulder of shaft 15 encounters the front seal 3 of bearing in advance in inner ring cooperation
Ring wall and generate motor abnormal sound.
Those skilled in the art will readily recognize that above-mentioned each advantageous manner can be free under the premise of not conflicting
Ground combination, superposition.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.Above only
It is the preferred embodiment of the present invention, it is noted that for those skilled in the art, do not departing from this hair
Under the premise of bright technical principle, several improvements and modifications can also be made, these improvements and modifications also should be regarded as guarantor of the invention
Protect range.
Claims (13)
1. a kind of bearing, which is characterized in that including inner ring (1), outer ring (2), front seal (3) and rear seal (4), before described
Sealing element (3) and the rear seal (4) are sealingly disposed between the inner ring (1) and the outer ring (2), the front seal
(3) it is located at the first end of the inner ring (1), the rear seal (4) is located at the second end of the inner ring (1), seals before described
It is provided with intercommunicating pore (5) in part (3) and/or the rear seal (4), the intercommunicating pore (5) is for being connected to the interior of the bearing
Portion space and exterior space.
2. bearing according to claim 1, which is characterized in that the both ends of the inner ring (1) include dustproof groove (6) and setting
Sealing bulge loop (7) in the dustproof groove (6) outer end, the front seal (3) and the rear seal (4) are respectively sleeved at phase
The periphery for the sealing bulge loop (7) answered, and sealing is formed between the dustproof groove (6).
3. bearing according to claim 1, which is characterized in that the both ends of the outer ring (2) are respectively arranged with shield groove
(8), the front seal (3) includes that the first clamping is raised (9), and the front seal (3) passes through the first clamping protrusion
(9) it is engaged by clamping between the shield groove (8) of first end, and/or, the rear seal (4) includes the second clamping
Raised (10), the rear seal (4) are clamped between raised (10) and the dustproof groove (6) lid of second end by described second
It is engaged by clamping.
4. bearing according to claim 1, which is characterized in that the intercommunicating pore (5) is fold-line-shaped or curved shape.
5. bearing according to claim 4, which is characterized in that the intercommunicating pore (5) is L shape, the L shape intercommunicating pore (5)
First segment be connected to along the axially extending of the inner ring (1), and with the inner space of the bearing, the L shape intercommunicating pore (5)
Second segment is radially extended along the inner ring (1), and is connected to the exterior space of the bearing.
6. bearing according to claim 1, which is characterized in that the first port of the intercommunicating pore (5) and the bearing
Inner space connection, the second port of the intercommunicating pore (5) are located at the radially inner side of the front seal (3).
7. bearing according to claim 5 or 6, which is characterized in that the radially inner side of the front seal (3) is provided with ring
The stop lug (11) of shape, the second port is between the stop lug (11) and the inner ring (1).
8. bearing according to claim 7, which is characterized in that along the direction far from the inner ring (1), the backstop is convex
Central axis of the inner ring surface of edge (11) gradually to the inner ring (1) is close.
9. bearing according to claim 1, which is characterized in that the bearing further includes rolling element (12), the rolling element
(12) in the raceway being arranged between the outer ring (2) and the inner ring (1).
10. bearing according to claim 9, which is characterized in that solid on the raceway of the axial sides of the rolling element (12)
Surely retainer (13) are provided with.
11. a kind of motor, including bearing, which is characterized in that the bearing is axis described in any one of claims 1 to 10
It holds.
12. motor according to claim 11, which is characterized in that the motor further includes end cap (14) and shaft (15),
The bearing is arranged between the end cap (14) and the shaft (15).
13. motor according to claim 12, which is characterized in that it is when the bearing includes being arranged on front seal (3)
When there are stop lug (11), is formed between the internal ring wall and the shaft (15) of the stop lug (11) and contact sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810982792.5A CN108930718B (en) | 2018-08-27 | 2018-08-27 | Bearing and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810982792.5A CN108930718B (en) | 2018-08-27 | 2018-08-27 | Bearing and motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108930718A true CN108930718A (en) | 2018-12-04 |
| CN108930718B CN108930718B (en) | 2024-05-14 |
Family
ID=64443217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810982792.5A Active CN108930718B (en) | 2018-08-27 | 2018-08-27 | Bearing and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108930718B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946826A (en) * | 2020-08-25 | 2020-11-17 | 珠海格力电器股份有限公司 | Oil seal device and transmission |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003013976A (en) * | 2001-06-28 | 2003-01-15 | Ntn Corp | Rolling bearing |
| JP2004019722A (en) * | 2002-06-13 | 2004-01-22 | Nsk Ltd | Roller bearing |
| CN206626184U (en) * | 2017-03-06 | 2017-11-10 | 常州多密特密封科技有限公司 | Carry the motor sealing of bearing |
| CN209083829U (en) * | 2018-08-27 | 2019-07-09 | 珠海格力电器股份有限公司 | Bearing and motor |
-
2018
- 2018-08-27 CN CN201810982792.5A patent/CN108930718B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003013976A (en) * | 2001-06-28 | 2003-01-15 | Ntn Corp | Rolling bearing |
| JP2004019722A (en) * | 2002-06-13 | 2004-01-22 | Nsk Ltd | Roller bearing |
| CN206626184U (en) * | 2017-03-06 | 2017-11-10 | 常州多密特密封科技有限公司 | Carry the motor sealing of bearing |
| CN209083829U (en) * | 2018-08-27 | 2019-07-09 | 珠海格力电器股份有限公司 | Bearing and motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946826A (en) * | 2020-08-25 | 2020-11-17 | 珠海格力电器股份有限公司 | Oil seal device and transmission |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108930718B (en) | 2024-05-14 |
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