CN106050977A - Novel sliding block type bidirectional overrunning clutch - Google Patents
Novel sliding block type bidirectional overrunning clutch Download PDFInfo
- Publication number
- CN106050977A CN106050977A CN201610609239.8A CN201610609239A CN106050977A CN 106050977 A CN106050977 A CN 106050977A CN 201610609239 A CN201610609239 A CN 201610609239A CN 106050977 A CN106050977 A CN 106050977A
- Authority
- CN
- China
- Prior art keywords
- slide block
- clutch
- raceway
- bearing
- semi
- 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.)
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D41/00—Freewheels or freewheel clutches
- F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
- F16D41/069—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by pivoting or rocking, e.g. sprags
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- 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
- F16D41/00—Freewheels or freewheel clutches
- F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
- F16D2041/0603—Sprag details
-
- 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
- F16D41/00—Freewheels or freewheel clutches
- F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
- F16D2041/0605—Spring details
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
The invention discloses a novel sliding block type bidirectional overrunning clutch. The novel sliding block type bi-directional overrunning clutch comprises an outer ring and sliding blocks. An inner ring support and a driving shifting fork are arranged inside the outer ring and fixed through check rings, close to the two ends, inside the outer ring. The inner ring support is provided with semi-circular groove rolling channels. The working face of each sliding block is arranged in the corresponding semi-circular groove rolling channel and is in contact with the corresponding semi-circular groove rolling channel. Each pair of semi-circular groove rolling channels and the pairs of sliding blocks are configured in opposite directions. The sliding blocks are in series connection through a spring to form an annular shape, and the sliding blocks are arranged in an annular space between an outer ring inner hole rolling channel and the inner ring support. The driving shifting fork is provided with shifting fork protruding claws. Each shifting fork protruding claw is inserted into a space between the corresponding sliding blocks which are arranged in opposite directions. The clutch has the beneficial effects of being reliable in bidirectional self-locking, precise in positioning and stable in operation; no impact or noise is generated in the releasing process; and the clutch is high in transmission efficiency and long in service life. In mechanical transmission, the clutch can be used for preventing reverse rotation bidirectionally; bidirectional rotation of a driving end can drive bidirectional rotation of a driven end; and the purpose of precise positioning or torque transmission or overrunning is achieved.
Description
Technical field
The present invention relates to machine driving spare part in common use freewheel clutch technical field, particularly to a kind of novel slide block type
Double rolling key clutch.
Background technology
At present, double rolling key clutch is at lathe, print chartered plane tool, petrochemical machinery, light industry and machinery, food machinery, weapons etc.
In machine driving, particularly supporting the use with ball-screw or reductor, main anti-locking mechanism reverses, be accurately positioned, transmit and turn
Square or surmount.Along with scientific and technical innovation, the development of modern technologies, double rolling key clutch application is constantly being expanded, is needing
Asking incremental, during as having two-way torque in active transfer system, it all can pass it to slave drive system, otherwise, driven
No matter drive system is subject to external torque clockwise or counterclockwise, active driveline system direction all can not be made to reverse, so that from
The dynamic upper working component connected, remains at accurately on precalculated position, the accident caused because of reverse more will not occur.Especially
To support the use with ball-screw, although ball-screw-transmission efficiency is high, but can not self-locking, when for vertical orientations transmission,
If component weight does not balance, it is necessary to prevent when after transmission stopping or electric motor circuit breaking, the reverse produced because parts deadweight
Dynamic, the major accident caused.
Straight roller formula double rolling key clutch roller is fixing with the contact position on star-wheel work surface, and roller is to shell
The pressure of body and star-wheel is relatively big, is first broken by conquassation and lost efficacy.And apply more locking key formula double rolling key clutch big
The most within it filling the stull of a locking key (voussoir) in inner walls, a tower spring head in advance, the side of locking key is actively, separately
Side is then driven, and such structure double rolling key clutch certainly exists the shortcoming being necessarily difficult to overcome.First, driven torus by
Being allowed to 1 1～4 ° swing in machining accuracy and assembling, impact is accurately positioned precision, is secondly such as in input torque and load
During torque operating mode in the same direction, its transient process and normal course of operation will be the reciprocation cycle of self-locking self-locking when in disengagement.At this shape
The mechanism worked under state can not brake immediately, and can bring great impact when braking, and impact energy cannot buffer off-load, easily
Cause the accident.It addition, serious from locking face blastic deformation, lose precision fast, mechanism is the most malfunctioning.There is clickly sound simultaneously.
Disadvantages mentioned above prior art is existed the accuracy of positioning precision is the highest, security performance is on the low side, service life is relatively
Short, that noise is bigger problem.
Summary of the invention
It is reliable that the technical problem to be solved in the present invention is to provide a kind of bidirectional self-locking, frees light, stable drive, accurately fixed
Position, the novel slide block type double rolling key clutch of anti-reverse machinery, to improve the accuracy of the positioning precision of freewheel clutch, safety
Performance, extends its service life, the noise produced when eliminating operating.
In order to solve above-mentioned technical problem, the technical scheme is that
A kind of novel slide block type double rolling key clutch, including outer shroud and slide block, outer shroud is cylinder barrel shaped, is internally provided with
Internal ring bearing and actively shift fork, internal ring bearing and actively shift fork fixed by the internal back-up ring at two ends of outer shroud, back-up ring and
It is provided with clutch shaft bearing and clutch shaft bearing seat between internal ring bearing, between back-up ring and actively shift fork, is provided with the second bearing and the second bearing
Seat, clutch shaft bearing seat and the second bearing block not only distinguish built-in clutch shaft bearing, the second bearing, also as the end cap of clutch.
Internal ring bearing is provided with semi-circular recesses raceway, and the work surface of slide block is placed in semi-circular recesses raceway, and with half
Circular groove raceway contact, every pair of semi-circular recesses raceway configures in opposite directions with paired slide block.
Slide block is concatenated into annular by spring, is arranged in the annular space between outer shroud endoporus raceway and internal ring bearing, main
Dynamic shift fork is provided with shift fork dog, inserts respectively between the slide block configured in opposite directions；The rotation of slide block be by active shift fork realize suitable,
Rotate in an anti-clockwise direction converts.
As further technical scheme, the side work surface that slide block mates with semi-circular recesses raceway is semicircle work
Face, the side work surface that slide block mates with the interior raceway of outer shroud is circular arc work surface；Two work surfaces of slide block are thermally treated
After again through cold treatment, stabilizing tissue, improve hardness, increase wearability, improve service life.
As further technical scheme, semicircle work surface and circular arc work surface are that large eccentricity is away from the most concentric.
As further technical scheme, being provided with aperture in the middle part of slide block, spring passes each aperture, and its head and the tail buckle phase
Connect, each slide block is concatenated into annular；The setting of spring can make the semicircle work surface of slide block be placed in internal ring bearing semicircle
In the socket of spill, and contact with outer shroud endoporus raceway all the time, in order to provide initial frictional.
As further technical scheme, spring is pulling force helical spring；Actively shift fork can be born and pass to slide block
Radial pull.
As further technical scheme, one end of internal ring bearing is provided with and the rim of the mouth of actively shift fork location, it is ensured that internal ring
Bearing rotates with actively shift fork concentricity.
As preferred technical scheme, the circumference uniform distribution 4 of internal ring bearing is to semi-circular recesses raceway, every pair of semi-circular recesses
Raceway Corresponding matching 1 to slide block, 1 shift fork dog.
As further technical scheme, between clutch shaft bearing and internal ring bearing, be provided with packing ring, with protect clutch shaft bearing with
The contact surface of internal ring bearing.
As being provided with the O type sealing that extrusion pressing type seals in further technical scheme, clutch shaft bearing seat and the second bearing block
Circle so that compact overall structure, kinetic frictional resistances is little, is suitable for reciprocal and rotary motion.
As further technical scheme, the two ends of outer shroud are equipped with multiple uniform bolt hole, to connect ex-ternal transmission
Mechanism.
Slide block type double rolling key clutch of the present invention provides the benefit that:
Present invention slider formula double rolling key clutch novel structure, compact, wedging part slide block uses contact stress less, and
Work circular arc radius of curvature is relatively big, therefore bearing capacity is maximum.
Present invention slider formula double rolling key clutch self-locking is reliable, frees steadily, and registration, without impact and noise.
Equipped with clutch shaft bearing and the second bearing in present configuration, axial force can be born, it is ensured that install and use same
Axle degree, is also subjected to certain radial force simultaneously, is conducive to running balance.
Internal ring susceptor design of the present invention is semi-circular recesses raceway, advantageously ensures that slide block positions, and synchronicity is relatively
Good.
Additionally, the present invention is by its slide block, internal ring bearing and outer shroud endoporus implement Surface hardening treatment, improve hardness and wear-resisting
Performance, increases service life.
Described in as above feature, the present invention provides the slide block type double rolling key clutch of a kind of anti-reverse machinery, has self-locking
Reliably, freeing light, stable drive, registration, bearing capacity is big, and transmission efficiency is high, safer more reliable advantage；Overall
Simple in construction, anufacturability is good, is suitable for batch production；The impact and sound easily produced when freeing can be overcome, run flat
Surely, service life is long, and applicable working condition is wide.
Accompanying drawing explanation
Fig. 1 is the sectional view of the present invention a kind of novel slide block type double rolling key clutch；
Fig. 2 is the sectional view of line B-B in Fig. 1；
Fig. 3 is the operation principle schematic diagram of present invention slider.
In figure, 1-outer shroud, 2-packing ring, 3-internal ring bearing, 4-actively shift fork, 5-clutch shaft bearing, 6-clutch shaft bearing seat, 7-keeps off
Circle, 8-O RunddichtringO, 9-slide block, 10-spring, 11-the second bearing, 12-the second bearing block.
Detailed description of the invention
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is described further.At this it should be noted that for
The explanation of these embodiments is adapted to assist in and understands the present invention, but is not intended that limitation of the invention.Additionally, it is disclosed below
As long as each embodiment of the present invention in involved technical characteristic do not constitute conflict each other and just can be mutually combined.
As depicted in figs. 1 and 2, a kind of novel slide block type double rolling key clutch of the present invention, including outer shroud 1 and slide block 9,
Outer shroud 1, in cylinder barrel shaped, can be connected by bolt or alternate manner and drive mechanism；The present invention is preferably the connection side of bolt
Formula, is equipped with multiple uniform bolt hole at the two ends of outer shroud 1.
The inside of outer shroud 1 is provided with internal ring bearing 3 and active shift fork 4, uses with driven shaft in drive mechanism and driving shaft respectively
Bonded, internal ring bearing 3 and actively shift fork 4 are fixed by the internal back-up ring 7 at two ends of outer shroud 1, back-up ring 7 and internal ring bearing
It is provided with clutch shaft bearing 5 and clutch shaft bearing seat 6 between 3, between back-up ring 7 and actively shift fork 4, is provided with the second bearing 11 and the second bearing
Seat 12, clutch shaft bearing seat 6 and the second bearing block 12 not only distinguish built-in clutch shaft bearing the 5, second bearing 11, also as clutch
End cap, plays the effect of sealing；Packing ring 2 it is provided with, to protect clutch shaft bearing 5 to prop up with internal ring between clutch shaft bearing 5 and internal ring bearing 3
The contact surface of seat 3.
One end of internal ring bearing 3 is provided with and the rim of the mouth of actively shift fork 4 location, it is ensured that internal ring bearing 3 is concentric with actively shift fork 4
Degree rotates.
The O RunddichtringO 8 that extrusion pressing type seals it is provided with so that overall structure is tight in clutch shaft bearing seat 6 and the second bearing block 12
Gathering, kinetic frictional resistances is little, is suitable for reciprocal and rotary motion.
Internal ring bearing 3 is provided with semi-circular recesses raceway, and the work surface of slide block 9 is placed in semi-circular recesses raceway, and with
Semi-circular recesses raceway contact, every pair of semi-circular recesses raceway configures in opposite directions with paired slide block 9；Slide block 9 is contacted by spring 10
Circularizing, be arranged in the annular space between outer shroud 1 endoporus raceway and internal ring bearing 3, actively shift fork 4 is provided with shift fork dog,
Insert respectively between the slide block 9 configured in opposite directions；Realize suitable, rotate in an anti-clockwise direction by active shift fork 4 to convert, in order to control from
The action of clutch；The circumference uniform distribution 4 of the present invention preferred internal ring bearing 3 is to semi-circular recesses raceway, every pair of semi-circular recesses raceway
Corresponding matching 1 is to slide block 9,1 shift fork dog.
The side work surface that slide block 9 mates with semi-circular recesses raceway is semicircle work surface, slide block 9 and the interior rolling of outer shroud
The side work surface of road coupling is circular arc work surface, and semicircle work surface and circular arc work surface are that large eccentricity is away from the most concentric；
Two work surfaces of slide block 9 through cold treatment, stabilizing tissue, improve hardness the most again, increase wearability, improve and use the longevity
Life.
Being provided with aperture in the middle part of slide block 9, spring 10 is through each aperture, and its head and the tail buckle and connect, and are concatenated into by each slide block 9
Annular；The setting of spring 10 can make the semicircle work surface of slide block 9 be placed in the socket of internal ring bearing 3 half round concave shape, and
All the time contact with outer shroud 1 endoporus raceway, in order to provide initial frictional；The spring 10 of the present invention is preferably pulling force helical spring
10；Actively shift fork 4 can be born and pass to the radial pull of slide block 9.
The operation principle of the present invention:
When the driving shaft connected in active shift fork 4 does not rotates, then actively shift fork 4 does not promote any slide block 9.At this moment, if
The moment of face in any direction (clockwise or counterclockwise) that driven shaft transmits all is prevented from blocking, because the slide block of paired phase configuration
9, respectively stop one and turn to.
As can be seen from Figure 3: when the driven shaft connected in internal ring bearing 3 rotates clockwise trend, internal ring bearing 3 is also
Rotate clockwise trend.The slide block 9 being in A1, B1 position is each made around each self-corresponding half slot heart O1 of internal ring bearing 3
Turning anticlockwise.And slide block 9Work surface is with O2 as the heart, the circular arc with r2 as radius, its endoporus raceway with outer shroud
Contact point is b.Owing to O1 is off by O2, such as slide block 9Arc rotates, then must same with O1 as the center of circle turn, therefore
In arcFor sliding arc, andFor braking arc.Now depending on shown in Fig. 3, the slide block 9 of B1 position has turning anticlockwise trend, it
Must fall with the contact point of outer shroud 1 endoporus racewayBraking arc in arcIn, therefore B1 position slide block 9 is braked by wedging；And
The contact point of A1 position slide block 9 must fallIn arcIn part arc, therefore A1 position slide block 9 can rotate.
In like manner, if driven shaft and internal ring bearing 3 rotate counterclockwise trend, then A1 position slide block 9 is by wedging, and B1 position
Put slide block 9 can rotate.
As secondary part driven shaft to be made rotates, as long as driving shaft drives shift fork dog to promote the slide block in any one direction
9 just can realize.When driving shaft drives its connection active shift fork 4 to rotate clockwise, four shift fork dog root E promote respectively
B1 position slide block 9 root D, makes work arc surface and outer shroud endoporus raceway of the slide block 9 of all B1 positions disengage, thus internal ring bearing
3 drive driven shaft to rotate clockwise, and also slide A1 position slide block 9 therewith (because of A1 position slide block 9 only to counterclockwise playing system
Action is used).Otherwise, when driving shaft drives active shift fork 4 to rotate counterclockwise, shift fork dog promotes A1 position slide block 9 and outer shroud
Endoporus raceway disengages, and B1 position slide block 9 is in sliding mode, makes driven shaft rotate counterclockwise.
Above in association with accompanying drawing, embodiments of the present invention are explained in detail, but the invention is not restricted to described enforcement
Mode.For a person skilled in the art, in the case of without departing from the principle of the invention and spirit, to these embodiments
Carry out multiple change, revise, replace and modification, still fall within protection scope of the present invention.
Claims (10)
1. a novel slide block type double rolling key clutch, it is characterised in that: include that outer shroud and slide block, described outer shroud are cylindrical drum
Shape, is internally provided with internal ring bearing and actively shift fork, described internal ring bearing and described active shift fork leans on by inside described outer shroud
Back-up ring at two close end is fixed, and is provided with clutch shaft bearing and clutch shaft bearing seat, described gear between described back-up ring and described internal ring bearing
It is provided with the second bearing and the second bearing block between circle and described active shift fork；
Described internal ring bearing is provided with semi-circular recesses raceway, and the work surface of described slide block is placed in described semi-circular recesses raceway
In, and with described semi-circular recesses raceway contact, every pair of described semi-circular recesses raceway configures in opposite directions with paired described slide block；
Described slide block is concatenated into annular by spring, and the annular being arranged between described outer shroud endoporus raceway and described internal ring bearing is empty
In, described active shift fork is provided with shift fork dog, inserts respectively between the described slide block configured in opposite directions.
Novel slide block type double rolling key clutch the most according to claim 1, it is characterised in that: described slide block and described half
Circular groove raceway coupling side work surface be semicircle work surface, described slide block mate with the interior raceway of described outer shroud one
Side work surface is circular arc work surface.
Novel slide block type double rolling key clutch the most according to claim 2, it is characterised in that: described semicircle work surface
It is that large eccentricity is away from the most concentric with described circular arc work surface.
Novel slide block type double rolling key clutch the most according to claim 1, it is characterised in that: it is provided with in the middle part of described slide block
Aperture, described spring passes each described aperture, and its head and the tail buckle and connect, and each described slide block is concatenated into annular.
Novel slide block type double rolling key clutch the most according to claim 4, it is characterised in that: described spring is pulling force spiral shell
Rotation spring.
Novel slide block type double rolling key clutch the most according to claim 1, it is characterised in that: the one of described internal ring bearing
End is provided with and the rim of the mouth of described active shift fork location.
Novel slide block type double rolling key clutch the most according to claim 1, it is characterised in that: the circle of described internal ring bearing
Zhou Junbu 4 is to described semi-circular recesses raceway, and every pair of described semi-circular recesses raceway Corresponding matching 1 is to described slide block, described in 1
Shift fork dog.
Novel slide block type double rolling key clutch the most according to claim 1, it is characterised in that: described clutch shaft bearing and institute
State and be provided with packing ring between internal ring bearing.
Novel slide block type double rolling key clutch the most according to claim 1, it is characterised in that: described clutch shaft bearing seat and
The O RunddichtringO that extrusion pressing type seals it is provided with in described second bearing block.
Novel slide block type double rolling key clutch the most according to claim 1, it is characterised in that: the two ends of described outer shroud
It is equipped with multiple uniform bolt hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610609239.8A CN106050977B (en) | 2016-07-28 | 2016-07-28 | Novel slide block type double rolling key clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610609239.8A CN106050977B (en) | 2016-07-28 | 2016-07-28 | Novel slide block type double rolling key clutch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106050977A true CN106050977A (en) | 2016-10-26 |
| CN106050977B CN106050977B (en) | 2019-02-05 |
Family
ID=57195806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610609239.8A Active CN106050977B (en) | 2016-07-28 | 2016-07-28 | Novel slide block type double rolling key clutch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106050977B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332254A (en) * | 2019-07-29 | 2019-10-15 | 上海延锋金桥汽车饰件系统有限公司 | Unilateral bearing assembly and its application |
| CN112343842A (en) * | 2019-08-09 | 2021-02-09 | 广东美的环境电器制造有限公司 | Tower fan |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2049512U (en) * | 1989-05-24 | 1989-12-20 | 于兆林 | High-efficiency multifunction axial flow type vegetable cutter |
| CN2057907U (en) * | 1989-09-09 | 1990-06-06 | 金仁成 | Automotive clutch type parking brake |
| CN1420291A (en) * | 2001-11-17 | 2003-05-28 | 王树春 | Arc block lower pair overrun clutch |
| CN2600645Y (en) * | 2003-01-30 | 2004-01-21 | 兰永福 | Freewheel clutch with deformed wedge |
| JP2008121737A (en) * | 2006-11-09 | 2008-05-29 | Ntn Corp | One-way clutch |
| CN204716811U (en) * | 2015-06-24 | 2015-10-21 | 北京新兴超越离合器有限公司 | A kind of two-way clutch self-locking device |
| CN105805184A (en) * | 2016-05-09 | 2016-07-27 | 广州汽车集团股份有限公司 | Controlled wedge block type bidirectional overrunning clutch |
| CN205841564U (en) * | 2016-07-28 | 2016-12-28 | 北京新兴超越离合器有限公司 | Novel slide block type double rolling key clutch |
-
2016
- 2016-07-28 CN CN201610609239.8A patent/CN106050977B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2049512U (en) * | 1989-05-24 | 1989-12-20 | 于兆林 | High-efficiency multifunction axial flow type vegetable cutter |
| CN2057907U (en) * | 1989-09-09 | 1990-06-06 | 金仁成 | Automotive clutch type parking brake |
| CN1420291A (en) * | 2001-11-17 | 2003-05-28 | 王树春 | Arc block lower pair overrun clutch |
| CN2600645Y (en) * | 2003-01-30 | 2004-01-21 | 兰永福 | Freewheel clutch with deformed wedge |
| JP2008121737A (en) * | 2006-11-09 | 2008-05-29 | Ntn Corp | One-way clutch |
| CN204716811U (en) * | 2015-06-24 | 2015-10-21 | 北京新兴超越离合器有限公司 | A kind of two-way clutch self-locking device |
| CN105805184A (en) * | 2016-05-09 | 2016-07-27 | 广州汽车集团股份有限公司 | Controlled wedge block type bidirectional overrunning clutch |
| CN205841564U (en) * | 2016-07-28 | 2016-12-28 | 北京新兴超越离合器有限公司 | Novel slide block type double rolling key clutch |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332254A (en) * | 2019-07-29 | 2019-10-15 | 上海延锋金桥汽车饰件系统有限公司 | Unilateral bearing assembly and its application |
| CN112343842A (en) * | 2019-08-09 | 2021-02-09 | 广东美的环境电器制造有限公司 | Tower fan |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106050977B (en) | 2019-02-05 |
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