CN110307314A - A kind of self-locking device and linear actuators of linear actuators - Google Patents
A kind of self-locking device and linear actuators of linear actuators Download PDFInfo
- Publication number
- CN110307314A CN110307314A CN201910462766.4A CN201910462766A CN110307314A CN 110307314 A CN110307314 A CN 110307314A CN 201910462766 A CN201910462766 A CN 201910462766A CN 110307314 A CN110307314 A CN 110307314A
- Authority
- CN
- China
- Prior art keywords
- inner ring
- self
- linear actuators
- rotary inner
- shift fork
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- 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
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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
- F16D41/064—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls
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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
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/2015—Means specially adapted for stopping actuators in the end position; Position sensing means
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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
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
- F16H25/2454—Brakes; Rotational locks
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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
- F16D41/064—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls
- F16D2041/0646—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls the intermediate coupling members moving between recesses in an inner race and recesses in an outer race
Abstract
The invention discloses a kind of self-locking devices of linear actuators, belong to linear actuators field, it is set between driving motor and the drive screw of linear actuators, the self-locking device includes track outer ring and the rotary inner ring that is rotatably arranged in track outer ring, the lateral wall of the rotary inner ring is equipped with ratchet slot, ball is equipped in the ratchet slot, the rotary inner ring is connected with planet shift fork, when the planet shift fork actively rotates towards the positive direction, the rotary inner ring is contacted to rotate towards the positive direction, the planet shift fork is actively towards when rotating backward, the planet shift fork contacts the ball, ball contacts the rotary inner ring court and rotates backward, the rotary inner ring is actively towards when rotating backward, ball is extruded between ratchet slot and track outer ring, form unidirectional self-lock.The invention also discloses the linear actuators using above-mentioned self-locking device, the advantage of the invention is that improving the self-lock force of linear actuators, while nor affecting on normal drive motion.
Description
[technical field]
The present invention relates to a kind of self-locking device of linear actuators and linear actuators, belong to linear actuators field.
[background technique]
Linear actuators is widely used in every field, including electric elevatable table, beddo, Electric sofa etc. at present
Driving motor, drive screw, transmission nut are generally included Deng, its structure of this linear actuators, driving motor drives transmission spiral shell
Bar rotation drives transmission nut axial movement when drive screw rotates, transmission nut can connect driven object, to realize drive
Dynamic purpose.
At present include lifting column in electric elevatable table by taking electric elevatable table as an example, wherein just includes driving in lifting column
Dynamic motor, drive screw, transmission nut, transmission nut drive pipe fitting to rise or fall, and this kind of electric elevatable table is the need for certainly
Lock function, i.e., in the state that motor is not run, lifting column should have self-locking function, to prevent same table automatic
Decline.Current lifting column this kind of on the market, self-locking function are realized by Brake torsion spring, and drive screw is utilized
Brake torsion spring is driven when rotating backward to hold tightly to generate brake force, dependence be after Brake torsion spring contract with drive screw it
Between frictional force it is self-locking to realize, this brake structure substantially belongs to a kind of flexible self-locking, the problem is that self-lock force is not
Foot, if when very big by lower pressure, the frictional force between Brake torsion spring and drive screw is not enough to overcome lower pressure, self-locking to have
It may will fail, cause unnecessary accident.
[summary of the invention]
A kind of linear actuators is provided technical problem to be solved by the present invention lies in overcome the deficiencies in the prior art
Self-locking device, improves the self-lock force of linear actuators, while nor affecting on normal drive motion.
Above-mentioned technical problem is solved, the present invention adopts the following technical scheme:
A kind of self-locking device of linear actuators, is set between the driving motor of linear actuators and drive screw, institute
The rotary inner ring that self-locking device includes track outer ring He is rotatably arranged in track outer ring is stated, the lateral wall of the rotary inner ring is set
There is ratchet slot, ball is equipped in the ratchet slot, the rotary inner ring is connected with planet shift fork, the planet shift fork active court
It when rotating forward, contacts the rotary inner ring and rotates towards the positive direction, the planet shift fork actively towards when rotating backward, dial by the planet
Fork contacts the ball, and ball contacts the rotary inner ring court and rotates backward, when rotary inner ring active court rotates backward,
Ball is extruded between ratchet slot and track outer ring, forms unidirectional self-lock.
Using beneficial effects of the present invention:
In the present invention, when planet shift fork is as active drive power, when rotating forward, planet shift fork directly stirs rotation
Inner ring is rotated, and when rotating backward, planet shift fork stirs ball, and it allows ball to stir rotary inner ring indirectly and is rotated, therefore
It when planet shift fork is as active drive power, either rotates forward, still rotates backward, planet shift fork can be turned with normal driving
Inner ring is moved relative to track outer ring rotating, therefore under normal operating conditions, by the rolling characteristic of ball, self-locking device of the present invention can
As a Double-directional rotary rolling bearing come using.
And when planet shift fork loses driving force, rotary inner ring as active drive, when rotary inner ring generation rotates backward
When trend, ball can be compressed between ratchet slot and track inner ring, so that rotary inner ring can not be formed with track outer ring
It relatively rotates, is to be compressed in ratchet slot by ball due to the self-lock force in the present invention to just form a self-locking state
It is realized between track inner ring, is that a kind of rigidity is self-locking, unless track outer ring or ratchet slot occur abrasion or destroy, not so certainly
Lock function will not fail, it is clear that the self-lock force of this structure can have greatly improved than the self-lock force of existing Brake torsion spring formula.
And structure of the invention, it is relatively easy in entire self-locking device structure, only by rotary inner ring, track outside
This few part composition of circle, ball, overall volume occupancy is small, and particularly axially direction is small in size, small to requirements of installation space, separately
Outer self-locking device of the invention itself is also possible to an integral moduleization design, and it is very convenient for being installed on linear actuators
's.
Preferably, the rotary inner ring is equipped with the holding tank being connected with the ratchet slot, the planet shift fork includes
Shifting block, the shifting block are accommodated in the holding tank.
Preferably, the ratchet slot includes the radial sidewalls being disposed radially and the tangential side wall being tangentially arranged, institute
State rotary inner ring actively towards when rotating backward, the tangential side wall generates deflection, by the ball be extruded in tangential side wall and
Between the inner wall of track outer ring.
Preferably, between the shifting block and the holding tank or between the shifting block and ball, in circumferential direction
There are free gaps.
Preferably, being circumferentially equipped at intervals with multiple ratchet slots on the rotary inner ring, each ratchet slot is correspondingly provided with receiving
Slot, the planet shift fork include shifting block corresponding with slot number is accommodated, and each shifting block correspondence is contained in holding tank.
Preferably, the planet shift fork is used to be sequentially connected with driving motor, the rotary inner ring is used for and transmission spiral shell
Bar transmission connection.
In addition, the invention also discloses a kind of linear actuators, including driving motor, drive screw, set on drive screw
There is transmission nut, the driving motor drives drive screw rotation, and transmission nut realizes axial relative movement on drive screw,
Self-locking device described in one of above-mentioned any scheme is equipped between the driving motor and drive screw.
Preferably, the driving motor is connect with planet shift fork, the drive screw is connect with the rotary inner ring.
Preferably, the planet shift fork includes pedestal and sets shifting block on the base, the driving motor is connected with snail
Worm and gear deceleration mechanism, the pedestal and worm gear realize axis connection；And/or the rotary inner ring is equipped with mounting hole, the transmission
Screw rod is mounted in mounting hole and realizes axis connection with rotary inner ring.
Preferably, the linear actuators further includes gear-box, the track outer ring is fixed on the gear-box, is driven
Dynamic motor, self-locking device, gear-box form a whole module.
These features and advantages of the invention will the detailed exposure in following specific embodiment, attached drawing.
[Detailed description of the invention]
Following further describes the present invention with reference to the drawings:
Fig. 1 is the perspective view of the explosion of one self-locking device of the embodiment of the present invention；
Fig. 2 is that one self-locking device of the embodiment of the present invention is mounted on the schematic diagram in driving motor gear-box；
Fig. 3 is the enlarged diagram in Fig. 1 at A；
Fig. 4 is the floor map of self-locking device in the embodiment of the present invention one；
Fig. 5 is state diagram of one self-locking device of the embodiment of the present invention when planet shift fork actively rotates forward；
Fig. 6 is state diagram of one self-locking device of the embodiment of the present invention when planet shift fork actively rotates backward；
Fig. 7 is state diagram of one self-locking device of the embodiment of the present invention when rotary inner ring actively rotates backward；
Fig. 8 is the structural schematic diagram of bilinear of embodiment of the present invention actuator.
[specific embodiment]
The technical solution of the embodiment of the present invention is explained and illustrated below with reference to the attached drawing of the embodiment of the present invention, but under
It states embodiment to be merely a preferred embodiment of the present invention, and not all.Based on the implementation example in the implementation mode, those skilled in the art
Obtained other embodiments without making creative work, belong to protection scope of the present invention.
In the following description, occur term "inner", "outside", "upper", "lower", the indicating positions such as "left", "right" or
Positional relationship, description embodiment merely for convenience and simplified description, rather than the device or member of indication or suggestion meaning
Part must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
Embodiment one:
As shown in Figures 1 to 7, the concrete preferred structure of 20 embodiment one of self-locking device of the present invention is illustrated.
As shown in Figure 1, the self-locking device 20 of the present embodiment is the transmission spiral shell for being set to driving motor 10 Yu linear actuators
Between bar, 20 one side of self-locking device is sequentially connected with driving motor 10, on the other hand connect with drive screw, specifically,
The self-locking device 20 of the present embodiment includes track outer ring 5 and the rotary inner ring 4 being rotatably arranged in track outer ring 5, the rotation
The lateral wall of inner ring 4 is equipped with ratchet slot 41, is equipped with ball 3 in the ratchet slot 41, and a ball is arranged in ratchet slot 41
3, when rotary inner ring 4 rotates towards the positive direction, rotary inner ring 4 can push the normal rolling of rolling, and when rotary inner ring 4 rotates backward
When, ball 3 can be compressed between ratchet slot 41 and track outer ring 5, unidirectional self-lock is formed, this ratchet slot 41 and ball 3
Principle, similar to the design principle on slope and roller in unilateral bearing.
In the present embodiment, the rotary inner ring 4 in self-locking device 20 is connected with planet shift fork 2, the 2 active court of planet shift fork
When rotating forward, contacts the rotary inner ring 4 and rotate towards the positive direction, when 2 active of the planet shift fork court rotates backward, the planet
Shift fork 2 contacts the ball 3, and ball 3 contacts the rotary inner ring 4 towards rotating backward.After planet shift fork 2 is added, so that working as
It when planet shift fork 2 is as active drive, either rotates forward, rotate backward, it is real that the equal energy band of planet shift fork 2 moves rotary inner ring 4
Now relatively rotate.So the operational effect of the present embodiment entirety: when planet shift fork 2 is as active drive, the present embodiment from
Locking device 20 is equivalent to the rolling bearing for capableing of Double-directional rotary, and when rotary inner ring 4 is used as active drive, planet shift fork 2
When being passive, the self-locking device 20 in the present embodiment is just equivalent to a unilateral bearing, can only realize single-direction transmission, reverse drive
When can generate it is self-locking.
After the present embodiment is used on linear actuators, when the rotation of 10 normal driving drive screw of driving motor, transmission
It is entirely unaffected by, and in the state that driving motor 10 is not run, self-locking device 20 can realize drive screw self-locking
Function, and due to the self-lock force in the present invention, it is to be compressed between ratchet slot 41 and track outer ring 5 to come in fact by ball 3
It is existing, it is that a kind of rigidity is self-locking, unless track outer ring 5 or ratchet slot 41 occur abrasion or destroy, not so self-locking function will not fail,
The self-lock force of obvious this structure can have greatly improved than the self-lock force of Brake torsion spring formula in existing linear actuators.
And structure of the invention, it is relatively easy in entire 20 structure of self-locking device, only rely on rotary inner ring 4, rail
Road outer ring 5, this several part of ball 3 form, and overall volume occupancy is small, and particularly axially direction is small in size, wants to installation space
Ask small, reference can be made to it is demonstrated in Figure 2, after being mounted in the gear-box 13 of driving motor 10, the body with normal gear-box 13
Product is almost consistent.
In addition self-locking device 20 of the invention itself is also an integral moduleization design, rotary inner ring 4, ball 3, track
The component of outer ring 5 three may be implemented to pre-install, and drive screw only needs to insert to rotary inner ring 4, very convenient, self-locking dress
Setting 20 integrally can also realize pre-installation, such as the schematic diagram being mounted in Fig. 2 with driving motor 10, entirely linearly cause in assembling
When dynamic device, it is only necessary to will be in drive screw inserting to rotary inner ring 4.
Specific structure is as shown in Figure 3 to Figure 4, and in the present embodiment, the planet shift fork 2 is used to pass with driving motor 10
Dynamic connection, driving motor 10 are connected with worm gear mechanism, and planet shift fork 2 includes pedestal 21 and the shifting block being located on pedestal 21
22, the spline structure 23 of dentation is wherein also convexly equipped on pedestal 21, in the worm gear 12 that can be just driven with driving motor 10
Spline go matching connect, and the rotary inner ring 4 be used for drive screw be sequentially connected, the end of drive screw is preferably
It is non-circular, such as hexagon prism, then a mounting hole 42, the shape of mounting hole 42 are set just in rotary inner ring 4 in the present embodiment
Shape is preferably hexagon ring, is just inserted with hexagon prism.
The rotary inner ring 4 is equipped with the holding tank 43 being connected with the ratchet slot 41, and the planet shift fork 2 includes shifting block
22, the shifting block 22 is accommodated in the holding tank 43.In the present embodiment, ratchet slot 41 is wedge groove in fact, and holding tank
43 preferably arc groove, corresponding shifting block 22 be also it is arc-shaped, such shifting block 22 is smooth when relatively rotating in holding tank 43
Property is more preferable.
As described above, ratchet slot 41 described in the present embodiment is wedge groove comprising the radial sidewalls being disposed radially
The 41a and tangential side wall 41b being tangentially arranged, and ball 3 is then accommodated in outside radial sidewalls 41a, tangential side wall 41b and track
Between the inner wall of circle 5.
Specific working principle can refer to Fig. 5 to Fig. 7, assume to rotate counterclockwise to rotate forward in the present embodiment:
As shown in figure 5, that is, planet shift fork 2 is actively to go at this time towards rotating counterclockwise when driving motor 10 rotates forward
The left end of shifting block 22 contacts the side wall of holding tank 43 in rotary inner ring 4 in star shift fork 2, to push rotary inner ring 4 towards the inverse time
Needle rotation, ball 3 at this time are close to the radial sidewalls 41a of ratchet slot 41, and under this state, ball 3 is in ratchet slot 41
Tangential side wall 41b and the inner wall of track outer ring 5 between be to have certain radial space, be free state, therefore this state
Under ball 3 normally can roll or slide.
Conversely, as shown in fig. 6, that is, planet shift fork 2 is that actively court rotates clockwise when driving motor 10 rotates backward
When, the right end of shifting block 22 contacts ball 3 in planet shift fork 2, and ball 3 at this time remains the radial sidewalls with ratchet slot 41
41a is to be close to, therefore under this state, ball 3 remains free state, therefore when driving motor 10 actively rotates clockwise, according to
So rotary inner ring 4 can be driven to rotate clockwise.
As shown in fig. 7, planet shift fork 2 is also accordingly in halted state, at this time planet when driving motor 10 is out of service
Shift fork 2 is in passive state, if rotary inner ring 4 is driven in the reverse direction at this time, i.e. rotary inner ring 4 is by rotating clockwise
When driving force, since ball 3 is not stirred by planet shift fork 2, the position of ball 3 is motionless, and rotary inner ring 4 occurs to turn clockwise
When dynamic, the tangential side wall 41b for being equivalent to ratchet slot 41 generates deflection, and dotted line shows the ratchet before not deflecting in Fig. 7
Slot 41, and solid line illustrated is ratchet slot 41 after deflection, it can be seen that ratchet slot 41 has occurred and that deflection angle α, and after deflecting
Radial sidewalls 41a can be separated with ball 3, and ball 3 can be extruded in tangential side wall 41b and track outer ring 5 by tangential side wall 41b
Between wall, two active forces by F1 in figure and F2, rotary inner ring 4 at this time can not continue towards suitable ball 3 at this time simultaneously
Clockwise rotation, therefore realize locking.
Preferably, there is free gap in circumferential direction, in this reality between the shifting block 22 and the holding tank 43
It applies in example, the free gap, can be between the left end of shifting block 22 and the left side wall of holding tank 43 has free gap h1, can also be with
It is to have free gap h2 between the right end of shifting block 22 and ball 3, there is the free gap, it is certain that rotary inner ring 4 can be supplied to
Deflection space, the angle of deflection is bigger, and self-lock force is stronger.
In order to make self-lock force more balanced, stable, multiple ratchet slots 41 are circumferentially equipped at intervals on the rotary inner ring 4, often
A ratchet slot 41 is correspondingly provided with holding tank 43, and preferably ratchet slot 41 has 3 in the present embodiment, certainly in other embodiments
It can be 2,4,5 etc., planet shift fork described in the present embodiment 2 includes 3 shifting blocks 22, and each shifting block 22 is corresponding to be accommodated
In holding tank 43.
Embodiment two
As shown in figure 8, the present embodiment is a kind of linear actuators, the linear actuators of the present embodiment is lifting column, main
With in same table, main includes driving motor 10, drive screw, transmission nut.This lifting column is three-section type column, is passed
Dynamic screw rod includes level-one screw rod 61, second level screw rod 62, and transmission nut also includes level-one nut 71 and second level nut 72, this three section
The specific structure and principle of the lifting column of formula have a large amount of disclosures in the prior art, do not illustrate excessively herein, this implementation
The improvement of example, be lifting column driving motor 10 on self-locking dress such as embodiment one or the equivalent program is installed
Set 20.
It should be noted that the present embodiment only shows one of lifting column, and linear actuators of the present invention
It is not limited to demonstrated in Figure 8, the internal structure of lifting column can have certain variation, while be also possible to two-segment type
Lifting column.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, is familiar with
The those skilled in the art should be understood that the present invention includes but is not limited to attached drawing and interior described in specific embodiment above
Hold.Any modification without departing from function and structure principle of the invention is intended to be included in the range of claims.
Claims (10)
1. a kind of self-locking device of linear actuators, is set between the driving motor of linear actuators and drive screw, special
Sign is, the self-locking device includes track outer ring and the rotary inner ring that is rotatably arranged in track outer ring, the rotary inner ring
Lateral wall be equipped with ratchet slot, be equipped with ball in the ratchet slot, the rotary inner ring is connected with planet shift fork, the planet
When shift fork actively rotates towards the positive direction, contacts the rotary inner ring and rotate towards the positive direction, when planet shift fork active court rotates backward,
The planet shift fork contacts the ball, and ball contacts the rotary inner ring court and rotates backward, rotary inner ring active court
When rotating backward, ball is extruded between ratchet slot and track outer ring, forms unidirectional self-lock.
2. the self-locking device of linear actuators as described in claim 1, which is characterized in that the rotary inner ring be equipped with it is described
The holding tank that ratchet slot is connected, the planet shift fork includes shifting block, and the shifting block is accommodated in the holding tank.
3. the self-locking device of linear actuators as claimed in claim 2, which is characterized in that the ratchet slot includes radially setting
The radial sidewalls set and the tangential side wall being tangentially arranged, when rotary inner ring active court rotates backward, the tangential side wall
Deflection is generated, the ball is extruded between tangential side wall and track outer ring inner wall.
4. the self-locking device of linear actuators as claimed in claim 3, which is characterized in that the shifting block and the holding tank side
Between wall or between the shifting block and ball, there is free gap in circumferential direction.
5. the self-locking device of linear actuators as claimed in claim 2, which is characterized in that circumferentially-spaced on the rotary inner ring
Equipped with multiple ratchet slots, each ratchet slot is correspondingly provided with holding tank, and the planet shift fork includes and accommodates slot number corresponding group
Block, each shifting block correspondence are contained in holding tank.
6. the self-locking device of linear actuators as described in claim 1, which is characterized in that the planet shift fork is used for and driving
Motor drive connection, the rotary inner ring are used to be sequentially connected with drive screw.
7. a kind of linear actuators, including driving motor, drive screw, drive screw is equipped with transmission nut, the driving electricity
Machine drives drive screw rotation, and transmission nut realizes axial relative movement on drive screw, which is characterized in that the driving electricity
The self-locking device as described in one of claim 1 to 5 is equipped between machine and drive screw.
8. linear actuators as claimed in claim 7, which is characterized in that the driving motor is connect with planet shift fork, described
Drive screw is connect with the rotary inner ring.
9. linear actuators as claimed in claim 8, which is characterized in that the planet shift fork includes pedestal and sets on the base
Shifting block, the driving motor is connected with turbine and worm decelerator, and the pedestal and worm gear realize axis connection；And/or it is described
Rotary inner ring is equipped with mounting hole, and the drive screw is mounted in mounting hole and realizes axis connection with rotary inner ring.
10. linear actuators as claimed in claim 7, which is characterized in that the linear actuators further includes gear-box, described
Track outer ring is fixed on the gear-box, and driving motor, self-locking device, gear-box form a whole module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910462766.4A CN110307314A (en) | 2019-05-30 | 2019-05-30 | A kind of self-locking device and linear actuators of linear actuators |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910462766.4A CN110307314A (en) | 2019-05-30 | 2019-05-30 | A kind of self-locking device and linear actuators of linear actuators |
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| CN110307314A true CN110307314A (en) | 2019-10-08 |
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| CN201910462766.4A Pending CN110307314A (en) | 2019-05-30 | 2019-05-30 | A kind of self-locking device and linear actuators of linear actuators |
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Cited By (2)
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| CN112128270A (en) * | 2020-10-23 | 2020-12-25 | 广东恒鑫智能装备股份有限公司 | One-way end face ratchet structure |
| CN114183478A (en) * | 2021-12-10 | 2022-03-15 | 南京佗道医疗科技有限公司 | Mechanical transmission clutch device and driving transmission mechanism |
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| CN107420506A (en) * | 2017-08-04 | 2017-12-01 | 宁波海仕凯驱动科技有限公司 | A kind of lifting column |
| CN210164867U (en) * | 2019-05-30 | 2020-03-20 | 宁波海仕凯驱动科技有限公司 | Self-locking device of linear actuator and linear actuator |
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| CN112128270A (en) * | 2020-10-23 | 2020-12-25 | 广东恒鑫智能装备股份有限公司 | One-way end face ratchet structure |
| CN114183478A (en) * | 2021-12-10 | 2022-03-15 | 南京佗道医疗科技有限公司 | Mechanical transmission clutch device and driving transmission mechanism |
| CN114183478B (en) * | 2021-12-10 | 2024-03-12 | 佗道医疗科技有限公司 | Mechanical transmission clutch device and driving transmission mechanism |
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