CN104179920B - Linear actuators and the quick release mechanism of adjustable speed thereof - Google Patents
Linear actuators and the quick release mechanism of adjustable speed thereof Download PDFInfo
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- CN104179920B CN104179920B CN201310200630.9A CN201310200630A CN104179920B CN 104179920 B CN104179920 B CN 104179920B CN 201310200630 A CN201310200630 A CN 201310200630A CN 104179920 B CN104179920 B CN 104179920B
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- quick release
- release mechanism
- scroll bar
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- bearing
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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
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
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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
- F16H57/00—General details of gearing
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention discloses a kind of linear actuators and include actuating mechanism, stretching structure and quick release mechanism.Quick release mechanism is arranged on the outer end of stretching structure, including connecting, the adapter of stretching structure, bearing and brake turbine axle are located at adapter, braking scroll bar is combined in bearing and optionally brakes brake turbine, elasticity presses group elasticity and is pressed against on braking scroll bar, elasticity press group by External Force Acting Accommodation braking scroll bar on press power, press power size determine braking scroll bar and brake turbine compress degree, accordingly, the retraction speed of stretching structure can pass through braking scroll bar and the compressing degree and adjust of brake turbine.
Description
Technical field
The present invention relates to a kind of linear actuators, the linear actuators of a kind of quick release mechanism with adjustable speed.
Background technology
Linear actuators (Linear Actuator) mainly utilizes motor and worm screw, worm gear etc. to drive assembly to drive a driving screw to rotate, ordered about by driving screw simultaneously and be bolted in telescoping tube thereon and make the linear action stretched out or retract relative to the outer tube being set in outside telescoping tube, due to its each side condition the most relatively gas such as structure and installation, oil hydraulic cylinder simply with convenient, the most it is widely used on the medical device such as sick bed, electrically propelled chair or equipment, or other needs have been stretched, contracted in the field operated.
By linear actuators now as a example by Bed conversion, as in the M275836 patent of TaiWan, China application, it is the quick release structure of a kind of sick bed actuator.It discloses sick bed and is provided with the actuator that can control reclining, and this actuator has the expansion link linked with Bed conversion framework, and this expansion link is extended through in outer tube, and expansion link axle sleeve is on driving screw, and the driving screw other end is coated with worm gear and spring respectively.Its release structure is mainly provided with pressing rod between guide screw worm and wheel, is separated with driving screw to pull worm gear of pulling by stopper pressing rod, and then makes expansion link quickly rotate to fall, reach effect that sick bed quickly discharges.
Above-mentioned quick release can be carried out when occurring first aid process maybe cannot power, and sick bed can be made to reach rapidly and reset, in order to carry out emergency treatment at once.But, if this quick release is only to carry out under blackout condition, reset immediately can cause no small impulsive force to sufferer, easily causes the discomfort of sufferer.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is to provide a kind of linear actuators, and it can discharge under blackout condition, and its quick release mechanism adjustable speed.
For solving above-mentioned technical problem, the technical scheme is that and be achieved in that: a kind of linear actuators, comprising: an actuating mechanism, comprise a motor and the driving screw driven by this motor；One stretching structure, comprises an axle sleeve nut on this driving screw and is socketed a telescoping tube of this nut；And a quick release mechanism, it is arranged on an outer end of this telescoping tube, comprises: an adapter, connect this telescoping tube, and the side of this adapter has a projection；One bearing, is fixed in outside this projection, and this bearing has a pair lug；One brake turbine, axle is located on this adapter；One braking scroll bar, is located between this lug, and brakes this brake turbine；And one elasticity press group, elasticity is pressed against on this braking scroll bar, and this elasticity presses group, and by an External Force Acting, Accommodation one presses power on this braking scroll bar；Wherein, what this size pressing power determined this braking scroll bar and this brake turbine compresses degree, and the retraction speed of this telescoping tube is adjusted by this braking scroll bar and the compressing degree of this brake turbine.
Preferably, this quick release mechanism further includes at least one ball bearing being folded between this adapter and this bearing, and this ball bearing is set in outside this projection and radially abuts this bearing.
Preferably, this quick release mechanism further includes a catch, and this catch is positioned on this projection gear and is against a side of this ball bearing.
Preferably, this quick release mechanism further includes a stud, and this projection is correspondingly provided with a screw, and this stud wears this catch and is combined in this screw.
Preferably, this elasticity presses group and includes a torsion spring and a knob of this braking scroll bar sheathed, and this torsion spring has fixing end and a free end, and this fixing end is fixed on this bearing, and this free end is stirred and this braking scroll bar of whiz by this knob.
Preferably, this torsion spring and this knob are provided respectively therein the dual side-edge of a lug.
Preferably, this knob has protruded out a swinging plate, and this lug is correspondingly provided with a chute, and this swinging plate wears this chute and is placed in a side of this free end.
Preferably, this swinging plate is an arc-like sheet, and this chute is an arcuate groove.
Preferably, this elasticity presses group and further includes one and fix seat and a locking part, and this fixing seat presses the fixing end of this torsion spring, and is combined in this bearing by this locking part.
Preferably, this fixing seat is provided with a locating slot, and the fixing end of this torsion spring is located in this locating slot.
Preferably, this elasticity presses group and further includes at least one supporter, and this supporter is set in one end of this braking scroll bar, and is combined in the side of this lug.
Preferably, this elasticity presses group and includes one first casting die being installed on this braking scroll bar, the connecting rod connecting this first casting die, the compression spring that is set on this connecting rod and one second casting die and the pull bar being connected this second casting die, and this second casting die is forced in this first casting die by the effect of this pull bar by this compression spring.
Preferably, this first casting die forms a cambered surface, and this cambered surface amplexiforms the side of this braking scroll bar.
Preferably, this second casting die is located relatively at the middle section of this compression spring.
Preferably, this second casting die is provided with a draw-in groove, and one end of this pull bar fixes in this draw-in groove.
The another kind of technical scheme that the present invention provides: the quick release mechanism of the adjustable speed of a kind of linear actuators, described linear actuators comprises an actuating mechanism and the stretching structure driven by this actuating mechanism, this quick release mechanism is arranged on an outer end of this stretching structure, it is characterized in that, described quick release mechanism includes: an adapter, connect this stretching structure, and the side of this adapter has a projection；One bearing, is fixed in outside this projection, and this bearing has a pair lug；One brake turbine, axle is located on this adapter；One braking scroll bar, be located in this to lug between, and brake this brake turbine；And one elasticity press group, elasticity is pressed against on this braking scroll bar, and this elasticity presses group, and by an External Force Acting, Accommodation one presses power on this braking scroll bar；Wherein, what this size pressing power determined this braking scroll bar and this brake turbine compresses degree, and the retraction speed of this stretching structure is adjusted by this braking scroll bar and the compressing degree of this brake turbine.
Preferably, this actuating mechanism comprises a motor and the driving screw driven by this motor, and this stretching structure comprises an axle sleeve nut on this driving screw and is socketed a telescoping tube of this nut, and this adapter connects this telescoping tube.
Preferably, this quick release mechanism further includes at least one ball bearing being folded between this adapter and this bearing, and this ball bearing is set in outside this projection and radially abuts this bearing.
Preferably, this quick release mechanism further includes a catch, and this catch is positioned on this projection gear and is against a side of this ball bearing.
Preferably, this quick release mechanism further includes a stud, and this projection is correspondingly provided with a screw, and this stud wears this catch and is combined in this screw.
Preferably, this elasticity presses group and includes a torsion spring and a knob of this braking scroll bar sheathed, and this torsion spring has fixing end and a free end, and this fixing end is fixed on this bearing, and this free end is stirred and this braking scroll bar of whiz by this knob.
Preferably, this torsion spring and this knob are provided respectively therein the dual side-edge of a lug.
Preferably, this knob has protruded out a swinging plate, and this lug is correspondingly provided with a chute, and this swinging plate wears this chute and is placed in a side of this free end.
Preferably, this swinging plate is an arc-like sheet, and this chute is an arcuate groove.
Preferably, this elasticity presses group and further includes one and fix seat and a locking part, and this fixing seat presses the fixing end of this torsion spring, and is combined in this bearing by this locking part.
Preferably, this fixing seat is provided with a locating slot, and the fixing end of this torsion spring is located in this locating slot.
Preferably, this elasticity presses group and further includes at least one supporter, and this supporter is set in one end of this braking scroll bar, and is combined in the side of this lug.
Preferably, this quick release mechanism further includes a clamshell, and this clamshell cover is combined in the outside of this bearing.
Preferably, this quick release mechanism further includes a coverboard, and this coverboard is linked in and seals another side of this clamshell on this adapter.
Preferably, this elasticity presses group and includes one first casting die being installed on this braking scroll bar, the connecting rod connecting this first casting die, the compression spring that is set on this connecting rod and one second casting die and the pull bar being connected this second casting die, and this second casting die is forced in this first casting die by the effect of this pull bar by this compression spring.
Preferably, this first casting die forms a cambered surface, and this cambered surface amplexiforms the side of this braking scroll bar.
Preferably, this second casting die is located relatively at the middle section of this compression spring.
Preferably, this second casting die is provided with a draw-in groove, and one end of this pull bar fixes in this draw-in groove.The technique effect that the present invention reaches is as follows: linear actuators of the present invention has quick release mechanism, quick release mechanism presses power by what elasticity pressed that group adjusts that braking scroll bar acts on brake turbine, the size pressing power determines braking scroll bar and the degree that compresses of brake turbine, and the retraction speed of stretching structure can be adjusted by braking scroll bar and the compressing degree of brake turbine.
Accompanying drawing explanation
Fig. 1 is the three-dimensional appearance schematic diagram of linear actuators of the present invention；
Fig. 2 is the three-dimensional appearance schematic diagram of quick release mechanism of the present invention；
Fig. 3 is the three-dimensional appearance schematic diagram in direction, quick release mechanism side of the present invention；
Fig. 4 is the three-dimensional appearance schematic diagram in quick release mechanism opposite side direction of the present invention；
Fig. 5 is the assembled sectional view of quick release mechanism of the present invention；
Fig. 6 is the assembled sectional view of quick release mechanism of the present invention and telescoping tube；
Fig. 7 is the broken section enlarged drawing of quick release mechanism of the present invention；
Fig. 8 is the action schematic diagram of quick release mechanism of the present invention；
Fig. 9 is the broken section enlarged drawing of quick release mechanism of the present invention；
The three-dimensional appearance schematic diagram of Figure 10 quick release mechanism of the present invention second embodiment；
Figure 11 is the assembled sectional view of quick release mechanism the second embodiment of the present invention；
Figure 12 is the action schematic diagram of quick release mechanism of the present invention.
[symbol description]
1 ... linear actuators
10 ... actuating mechanism
11 ... motor
12 ... driving screw
20 ... stretching structure
21 ... nut
22 ... telescoping tube
30,30a ... quick release mechanism
31,31a ... adapter
310 ... screw
311 ... projection
32,32a ... bearing
321 ... lug
3210 ... chute
33,33a ... brake turbine
34,34a ... braking scroll bar
35,35a ... elasticity presses group
351 ... torsion spring
351a ... the first casting die
3510a ... cambered surface
3511 ... fixing end
3512 ... free end
352 ... knob
352a ... connecting rod
3521 ... swinging plate
353 ... supporter
353 ＇ ... pad
353 ＇ ＇ ... bearing
353a ... compression spring
354 ... fixing seat
354a ... the second casting die
3540a ... draw-in groove
3540 ... locating slot
355 ... locking part
355a ... pull bar
36 ... thrust bearing
37 ... ball bearing
38 ... catch
39 ... stud
40 ... pedestal
50 ... outer tube
60 ... pin joint seat
70 ... clamshell
71 ... coverboard.
Detailed description of the invention
Refer to Fig. 1, for the three-dimensional appearance schematic diagram of linear actuators of the present invention.The linear actuators 1 of adjustable speed of the present invention includes actuating mechanism 10, stretching structure 20 and a quick release mechanism 30.Actuating mechanism 10 comprises a motor 11 and the driving screw 12 driven by motor 11.Stretching structure 20 comprises an axle sleeve nut 21 on driving screw 12 and a telescoping tube 22 of socket nut 21.Quick release mechanism 30 is then provided in an outer end of telescoping tube 22.By the setting of quick release mechanism 30, in the case of cannot powering, utilizing the foreign object deadweight acting on stretching structure 20, the release of quick release mechanism 30 can make telescoping tube 22 retract.Additionally, the retraction speed of telescoping tube 22 more can be adjusted by quick release mechanism 30.
In the present embodiment, linear actuators 1 further includes a pedestal 40 and connects an outer tube 50 of this pedestal 40.Actuating mechanism 10 is contained in pedestal 40.Nut 21 is arranged in outer tube 50, and one end of telescoping tube 22 exposes outside outer tube 50.
Please continue with reference to Fig. 2 ~ Fig. 5, the three-dimensional appearance schematic diagram of quick release mechanism the most of the present invention, two sides to perspective exploded view and assembled sectional view.Quick release mechanism 30 comprises an adapter 31, bearing 32, brake turbine (worm gear) 33, braking scroll bar (worm shaft) 34 and an elasticity presses group 35.In one embodiment of this invention, quick release mechanism 30 further includes a pin joint seat 60, and this pin joint seat 60 is fixed on an outer end of this bearing 32.
Adapter 31 connects this telescoping tube 22, and the side of this adapter 31 has a projection 311.This bearing 32 is fixed in outside this projection 311, and this bearing 32 has a pair lug 321.Brake turbine 33 axle is located on the projection 311 of adapter 31.Braking scroll bar 34 is located between lug 321, and optionally braking brake turbine 33.It is then that elasticity is pressed against on braking scroll bar 34 that elasticity presses group 35.Elasticity presses group 35, and by an External Force Acting, Accommodation presses power braked on scroll bar 34.Wherein, this size pressing power determines braking scroll bar 34 and the degree that compresses of brake turbine 33, and the retraction speed of telescoping tube 22 is adjusted by braking scroll bar 34 and the compressing degree of brake turbine 33.Therefore, when pressing power and being bigger, braking scroll bar 34 presses brake turbine 33 and makes the brake turbine 33 cannot turn；That is, brake turbine 33 cannot be rotated by the braking of braking scroll bar 34, and now linear actuators 1 is normal operation.
In one embodiment of this invention, quick release mechanism 30 further includes thrust bearing 36 and at least one ball bearing 37 being folded between adapter 31 and bearing 32.Thrust bearing 36 is set in the outer and axial abutment seat 32 of projection 311 of adapter 31.Ball bearing 37 is then bearing sleeve radial direction abutment seat 32 outside the projection 311 of adapter 31.
It is preferred that quick release mechanism 30 further includes catch 38 and a stud 39.Catch 38 is positioned on projection 311 gear and is against a side of ball bearing 37.Furthermore, the end face of projection 311 is correspondingly provided with a screw 310, and stud 39 wears catch 38 and is combined in screw 310.Describe in detail elasticity press group 35 structure as after.
In the present embodiment, elasticity presses and organizes 35 torsion spring 351 and the knobs 352 including sheathed braking scroll bar 34.Torsion spring 351 has fixing end 3511 and a free end 3512.Fixing end 3511 is fixed on bearing 32, and free end 3512 is stirred by knob 352 and whiz braking scroll bar 34.
Also, torsion spring 351 and knob 352 are provided respectively therein the dual side-edge of a lug 321.Knob 352 has protruded out a swinging plate 3521, and lug 321 is correspondingly provided with a chute 3210, and swinging plate 3521 wears chute 3210 and is placed in a side of free end 3512.During actual enforcement, swinging plate 3521 can be set to an arc-like sheet, and chute 3210 correspondence is set to an arcuate groove.
Furthermore, elasticity presses group 35 and further includes at least one supporter 353, and fix seat 354 and a locking part 355.Supporter 353 is set in one end of braking scroll bar 34, and is combined in the side of lug 321, to provide braking scroll bar 34 relative to the support force between lug 321.Fixing seat 354 and locking part 355 are used for fixing torsion spring 351.Fixing seat 354 presses the fixing end 3511 of torsion spring 351, and fixing seat 354 is combined in bearing 32 by locking part 355.During actual enforcement, can be provided with a locating slot 3540 at fixing seat 354, the fixing end 3511 of torsion spring 351 wears locating slot 3540 and is fixed.In the present embodiment, supporter 353 comprises pad 353 ＇ and pair of bearings 353 ＇ ＇；It is preferred that this is set to ball bearing or thrust bearing, to meet use requirement to the bearing 353 visual actual state of ＇ ＇.
In one embodiment of this invention, quick release mechanism 30 further includes clamshell 70 and a coverboard 71.Clamshell 70 cover is combined in the outside of bearing 32, and pin joint seat 60 is exposed at a side of clamshell 70.Coverboard 71 is linked in and seals another side of clamshell 70 on adapter 31.
Refer to Fig. 6 and Fig. 7, quick release mechanism the most of the present invention and the assembled sectional view of telescoping tube and broken section enlarged drawing thereof.When quick release mechanism of the present invention 30 groups sets, adapter 31 screws togather telescoping tube 22 relative to another side of projection 311, and now, braking scroll bar 34 presses on brake turbine 33.Fig. 7 shows the assembled sectional view of torsion spring and braking scroll bar.It is outer and make the braking scroll bar 34 cannot turn that torsion spring 351 is tightly placed in braking scroll bar 34.And the swinging plate 3521 of knob 352 rests against the side of free end 3512 of knob 352.
Please referring additionally to Fig. 8 and Fig. 9, the action schematic diagram of quick release mechanism the most of the present invention and broken section enlarged drawing thereof.In the case of cannot powering, user can start this quick release mechanism 30 and make telescoping tube 22 retract.During quick release mechanism 30 to be started, user can pull swinging plate 3521, and to be reduced the binding force of braking scroll bar 34 towards the direction whiz away from braking scroll bar 34, torsion spring 351 by the free end 3512 of torsion spring 351, braking scroll bar 34 can somewhat turn.Now, brake turbine 33 also departs from the braking braking of scroll bar 34 and rotatable.Accordingly, brake turbine 33 can rotate relative to bearing 32, and along with telescoping tube 22 is retracted.
Furthermore, owing to torsion spring 351 determines the braking scroll bar 34 size to the power that presses of brake turbine 33 to the big I of binding force of braking scroll bar 34, and then determine brake applications between the two.Therefore, user can control the torsion spring 351 binding force to braking scroll bar 34 by the angle of pulling of knob 352, thus controls the retraction speed of telescoping tube 22.
Refer to Figure 10 and Figure 11, the three-dimensional appearance schematic diagram of the second embodiment of quick release mechanism the most of the present invention and assembled sectional view.The present embodiment is roughly the same with first embodiment, and quick release mechanism 30a comprises an adapter 31a, bearing 32a, a brake turbine 33a, a braking scroll bar 34a and an elasticity and presses group 35a.Its difference is that elasticity presses the embodiment of group 35a.
In the present embodiment, elasticity presses group 35a and includes the one first casting die 351a being installed on braking scroll bar 34a, connect a connecting rod 352a of the first casting die 351a, compression spring 353a being set on connecting rod 352a and one second casting die 354a and connect a pull bar 355a of the second casting die 354a.Wherein, the effect of the second casting die 354a tension member 355a and force in the first casting die 351a by compression spring 353a.Now, braking scroll bar 34a presses on brake turbine 33a, and the first casting die 351a compresses braking scroll bar 34a and makes the braking scroll bar 34a cannot turn.
It is preferred that the first casting die 351a forms cambered surface 3510a, cambered surface 3510a amplexiforms the side of braking scroll bar 34a.Second casting die 354a is located relatively at the middle section of compression spring 353a.Additionally, the second casting die 354a is provided with a draw-in groove 3540a, one end of pull bar 355a fixes in draw-in groove 3540a.
Referring again to Figure 12, for the action schematic diagram of quick release mechanism of the present invention.Identical with previous embodiment, in the case of cannot powering, user can start quick release mechanism 30a and make telescoping tube 22 retract.During quick release mechanism 30a to be started, user can pull pull bar 355a, so that the second casting die 354a is moved towards the direction away from braking scroll bar 34a, reduce compression spring 353a and the first casting die 351a and braking scroll bar 34a is pressed power, therefore braking scroll bar 34a can somewhat turn.Now, brake turbine 33a also departs from the braking braking of scroll bar 34a and rotatable.Accordingly, brake turbine 33a can rotate relative to bearing 32a, and along with telescoping tube 22 is retracted.
It is noted that identical with previous embodiment is that this first casting die 351a presses the power big I decision braking scroll bar 34a brake applications to brake turbine 33a to braking scroll bar 34a.Therefore, user can pull the second casting die 354a to control compression spring 353a and braking scroll bar 34a is pressed power by pull bar 355a, thus controls the retraction speed of this telescoping tube 22.
The above, only presently preferred embodiments of the present invention, it is not intended to limit protection scope of the present invention.
Claims (33)
1. a linear actuators, it is characterised in that comprising:
One actuating mechanism, comprises a motor and the driving screw driven by this motor；
One stretching structure, comprises an axle sleeve nut on this driving screw and is socketed a telescoping tube of this nut；And
One quick release mechanism, is arranged on an outer end of this telescoping tube, comprises:
One adapter, connects this telescoping tube, and the side of this adapter has a projection；
One bearing, is fixed in outside this projection, and this bearing has a pair lug；
One brake turbine, axle is located on this adapter；
One braking scroll bar, is located between this lug, and brakes this brake turbine；And
One elasticity presses group, and elasticity is pressed against on this braking scroll bar, and this elasticity presses group, and by an External Force Acting, Accommodation one presses power on this braking scroll bar；
Wherein, what this size pressing power determined this braking scroll bar and this brake turbine compresses degree, and the retraction speed of this telescoping tube is adjusted by this braking scroll bar and the compressing degree of this brake turbine.
Linear actuators the most according to claim 1, it is characterised in that this quick release mechanism further includes at least one ball bearing being folded between this adapter and this bearing, this ball bearing is set in outside this projection and radially abuts this bearing.
Linear actuators the most according to claim 2, it is characterised in that this quick release mechanism further includes a catch, this catch is positioned on this projection gear and is against a side of this ball bearing.
Linear actuators the most according to claim 3, it is characterised in that this quick release mechanism further includes a stud, this projection is correspondingly provided with a screw, and this stud wears this catch and is combined in this screw.
Linear actuators the most according to claim 1, it is characterized in that, this elasticity presses group and includes a torsion spring and a knob of this braking scroll bar sheathed, and this torsion spring has fixing end and a free end, this fixing end is fixed on this bearing, and this free end is stirred and this braking scroll bar of whiz by this knob.
Linear actuators the most according to claim 5, it is characterised in that this torsion spring and this knob are provided respectively therein the dual side-edge of a lug.
Linear actuators the most according to claim 6, it is characterised in that this knob has protruded out a swinging plate, this lug is correspondingly provided with a chute, and this swinging plate wears this chute and is placed in a side of this free end.
Linear actuators the most according to claim 7, it is characterised in that this swinging plate is an arc-like sheet, this chute is an arcuate groove.
Linear actuators the most according to claim 5, it is characterised in that this elasticity presses group and further includes one and fix seat and a locking part, and this fixing seat presses the fixing end of this torsion spring, and is combined in this bearing by this locking part.
Linear actuators the most according to claim 9, it is characterised in that this fixing seat is provided with a locating slot, the fixing end of this torsion spring is located in this locating slot.
11. linear actuatorss according to claim 1, it is characterised in that this elasticity presses group and further includes at least one supporter, this supporter is set in one end of this braking scroll bar, and is combined in the side of this lug.
12. linear actuatorss according to claim 1, it is characterized in that, this elasticity presses group and includes one first casting die being installed on this braking scroll bar, the connecting rod connecting this first casting die, the compression spring that is set on this connecting rod and one second casting die and the pull bar being connected this second casting die, and this second casting die is forced in this first casting die by the effect of this pull bar by this compression spring.
13. linear actuatorss according to claim 12, it is characterised in that this first casting die forms a cambered surface, and this cambered surface amplexiforms the side of this braking scroll bar.
14. linear actuatorss according to claim 12, it is characterised in that this second casting die is located relatively at the middle section of this compression spring.
15. linear actuatorss according to claim 12, it is characterised in that this second casting die is provided with a draw-in groove, one end of this pull bar fixes in this draw-in groove.
The quick release mechanism of the adjustable speed of 16. 1 kinds of linear actuatorss, described linear actuators comprises an actuating mechanism and the stretching structure driven by this actuating mechanism, this quick release mechanism is arranged on an outer end of this stretching structure, it is characterised in that described quick release mechanism includes:
One adapter, connects this stretching structure, and the side of this adapter has a projection；
One bearing, is fixed in outside this projection, and this bearing has a pair lug；
One brake turbine, axle is located on this adapter；
One braking scroll bar, be located in this to lug between, and brake this brake turbine；And
One elasticity presses group, and elasticity is pressed against on this braking scroll bar, and this elasticity presses group, and by an External Force Acting, Accommodation one presses power on this braking scroll bar；
Wherein, what this size pressing power determined this braking scroll bar and this brake turbine compresses degree, and the retraction speed of this stretching structure is adjusted by this braking scroll bar and the compressing degree of this brake turbine.
The quick release mechanism of the adjustable speed of 17. linear actuatorss according to claim 16, it is characterized in that, this actuating mechanism comprises a motor and the driving screw driven by this motor, this stretching structure comprises an axle sleeve nut on this driving screw and is socketed a telescoping tube of this nut, and this adapter connects this telescoping tube.
18. the quick release mechanism of the adjustable speed of linear actuators according to claim 16, it is characterized in that, this quick release mechanism further includes at least one ball bearing being folded between this adapter and this bearing, and this ball bearing is set in outside this projection and radially abuts this bearing.
The quick release mechanism of the adjustable speed of 19. linear actuatorss according to claim 18, it is characterised in that this quick release mechanism further includes a catch, this catch is positioned on this projection gear and is against a side of this ball bearing.
The quick release mechanism of the adjustable speed of 20. linear actuatorss according to claim 19, it is characterised in that this quick release mechanism further includes a stud, this projection is correspondingly provided with a screw, and this stud wears this catch and is combined in this screw.
The quick release mechanism of the adjustable speed of 21. linear actuatorss according to claim 16, it is characterized in that, this elasticity presses group and includes a torsion spring and a knob of this braking scroll bar sheathed, this torsion spring has fixing end and a free end, this fixing end is fixed on this bearing, and this free end is stirred and this braking scroll bar of whiz by this knob.
The quick release mechanism of the adjustable speed of 22. linear actuatorss according to claim 21, it is characterised in that this torsion spring and this knob are provided respectively therein the dual side-edge of a lug.
The quick release mechanism of the adjustable speed of 23. linear actuatorss according to claim 22, it is characterised in that this knob has protruded out a swinging plate, this lug is correspondingly provided with a chute, and this swinging plate wears this chute and is placed in a side of this free end.
The quick release mechanism of the adjustable speed of 24. linear actuatorss according to claim 23, it is characterised in that this swinging plate is an arc-like sheet, this chute is an arcuate groove.
The quick release mechanism of the adjustable speed of 25. linear actuatorss according to claim 21, it is characterized in that, this elasticity presses group and further includes one and fix seat and a locking part, and this fixing seat presses the fixing end of this torsion spring, and is combined in this bearing by this locking part.
The quick release mechanism of the adjustable speed of 26. linear actuatorss according to claim 25, it is characterised in that this fixing seat is provided with a locating slot, the fixing end of this torsion spring is located in this locating slot.
The quick release mechanism of the adjustable speed of 27. linear actuatorss according to claim 16, it is characterised in that this elasticity presses group and further includes at least one supporter, this supporter is set in one end of this braking scroll bar, and is combined in the side of this lug.
The quick release mechanism of the adjustable speed of 28. linear actuatorss according to claim 16, it is characterised in that this quick release mechanism further includes a clamshell, this clamshell cover is combined in the outside of this bearing.
The quick release mechanism of the adjustable speed of 29. linear actuatorss according to claim 28, it is characterised in that this quick release mechanism further includes a coverboard, this coverboard is linked in and seals another side of this clamshell on this adapter.
The quick release mechanism of the adjustable speed of 30. linear actuatorss according to claim 16, it is characterized in that, this elasticity presses group and includes one first casting die being installed on this braking scroll bar, the connecting rod connecting this first casting die, the compression spring that is set on this connecting rod and one second casting die and the pull bar being connected this second casting die, and this second casting die is forced in this first casting die by the effect of this pull bar by this compression spring.
The quick release mechanism of the adjustable speed of 31. linear actuatorss according to claim 30, it is characterised in that this first casting die forms a cambered surface, and this cambered surface amplexiforms the side of this braking scroll bar.
The quick release mechanism of the adjustable speed of 32. linear actuatorss according to claim 30, it is characterised in that this second casting die is located relatively at the middle section of this compression spring.
The quick release mechanism of the adjustable speed of 33. linear actuatorss according to claim 30, it is characterised in that this second casting die is provided with a draw-in groove, one end of this pull bar fixes in this draw-in groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310200630.9A CN104179920B (en) | 2013-05-27 | 2013-05-27 | Linear actuators and the quick release mechanism of adjustable speed thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310200630.9A CN104179920B (en) | 2013-05-27 | 2013-05-27 | Linear actuators and the quick release mechanism of adjustable speed thereof |
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| CN104179920B true CN104179920B (en) | 2016-09-14 |
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| TWM452540U (en) * | 2012-12-27 | 2013-05-01 | Timotion Technology Co Ltd | Electric cylinder and rapid release mechanism thereof |
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| CN101040134A (en) * | 2004-10-15 | 2007-09-19 | 利纳克有限公司 | A linear actuator |
| CN2812896Y (en) * | 2005-04-26 | 2006-09-06 | 台优电机股份有限公司 | Fast releasing device for sickbed actuator |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104179920A (en) | 2014-12-03 |
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