CN206906784U - A kind of projection screen system - Google Patents
A kind of projection screen system Download PDFInfo
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- CN206906784U CN206906784U CN201720608038.6U CN201720608038U CN206906784U CN 206906784 U CN206906784 U CN 206906784U CN 201720608038 U CN201720608038 U CN 201720608038U CN 206906784 U CN206906784 U CN 206906784U
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- lift
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- main shaft
- shaft
- mainshaft
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Abstract
A kind of projection screen system, including mainshaft mechanism, some lift mechanisms, curtain, support；The mainshaft mechanism, lift mechanism are erected on support；The mainshaft mechanism includes main shaft, mainshaft mechanism controller, main shaft power device, spindle gearing, main shaft speed change device, speed of mainshaft sensor；The mainshaft mechanism controller is electrically connected with main shaft power device；The main shaft power device drive shaft transmission device drives main axis, so as to realize the stretching, extension of curtain and retraction；The main shaft power device is through rotating speed needed for main shaft speed change device output main axis；The speed of mainshaft sensor is arranged near main shaft；The lift mechanism is arranged on main shaft down either side and the contact of main shaft cylinder, lifts the curtain of main shaft winding.The utility model is simple in construction, can solve the problem that the long stage casing sagging problem brought under the influence of gravity of curtain main shaft.
Description
Technical field
It the utility model is related to projection screen technical field, more particularly to a kind of projection screen system.
Background technology
Since projector is since entry into Chinese market, development is swift and violent all the way, and market sales volume increasingly increases.As projector should
With the continuous extension in field, personal family field is expanded to via government, education, enterprise field at present, its price is also more next
More hommization.This imply that the huge opportunity of projection screen comes, Chinese projection screen market will be increasing, its competition situation
Quietly change.Projection screen is the place that picture directly displays, its importance does not allow matter as last ring in optical projection system
Doubt.
But when curtain main shaft is long, the sagging deflections problem brought under the influence of gravity can have a strong impact on projection viewing
Quality, or even projection screen is caused to damage.
In summary, the projection screen, in practice in the presence of it is inconvenient the problem of, it is therefore necessary to improved.
Utility model content
The purpose of this utility model is to provide projection screen system, to solve the long band under the influence of gravity of larger curtain main shaft
The stage casing sagging problem come.
To achieve the above object, using following technical scheme：
A kind of projection screen system, including mainshaft mechanism, some lift mechanisms, curtain, support；The mainshaft mechanism, lift
Mechanism is erected on support；The mainshaft mechanism includes main shaft, mainshaft mechanism controller, main shaft power device, spindle drive
Device, main shaft speed change device, speed of mainshaft sensor；The mainshaft mechanism controller is electrically connected with main shaft power device；It is described
Main shaft power device drive shaft transmission device drives main axis, so as to realize the stretching, extension of curtain and retraction；The main shaft moves
Power apparatus is through rotating speed needed for main shaft speed change device output main axis；The speed of mainshaft sensor is arranged near main shaft；It is described
Lift mechanism is arranged on main shaft down either side and the contact of main shaft cylinder, lifts the curtain of main shaft winding.
It is preferred that the lift mechanism include lifting axle, it is consistent with lifting shaft length lift axle sleeve, lift mechanism controls
Device, axle power set are lifted, shaft drive is lifted, lifts shaft transmission, lifts shaft speed transducer；The axle of lifting passes through
Lift axle sleeve through hole nested encryptions；The lift mechanism controller is with lifting the electric connection of axle power set；The axle of lifting moves
Power apparatus driving lifts shaft drive drive and lifts axle rotation；The axle power set of lifting are through lifting shaft transmission output support
Lift rotating speed needed for axle；It is described lift shaft speed transducer and be arranged on lift near axle；The shaft drive of lifting includes setting
Lifting axle power set output end, the belt pulley for lifting axle one end and the belt being nested on two belt pulleys.
It is preferred that the lift mechanism includes lifting axle, consistent with lifting shaft length lift axle sleeve, lifts axle and be driven and fill
Put, lift shaft transmission, lift shaft speed transducer；The axle of lifting is through lifting axle sleeve through hole nested encryptions；The main shaft
Power set lift axle rotation through lifting shaft drive driving；The axle power set of lifting are through lifting shaft transmission output support
Lift rotating speed needed for axle；It is described lift shaft speed transducer and be arranged on lift near axle；The shaft drive of lifting includes setting
In main shaft power device output end, lift the belt pulley of axle one end and the belt being nested on two belt pulleys.
It is preferred that the lift mechanism includes lifting axle, lifts shaft speed transducer, at least one lifts wheel；It is described to lift
Axle is flexibly connected through wheel through hole is lifted with it；It is described lift shaft speed transducer and be arranged on lift near axle.
It is preferred that the projection screen system also includes master controller；Mainshaft mechanism is electrically connected in the master controller
Controller, lift mechanism controller, speed of mainshaft sensor, lift shaft speed transducer.
It is preferred that the projection screen system also includes master controller；Mainshaft mechanism is electrically connected in the master controller
Controller, speed of mainshaft sensor, lift shaft speed transducer.
It is preferred that the spindle gearing includes being arranged on main shaft power device output end, the belt pulley of main shaft one end
With the belt being nested on two belt pulleys.
It is preferred that the mainshaft mechanism, lift mechanism also include two shaft mounting devices；The shaft mounting device includes peace
Shelve, four Elastic plastic-rubber parts；The mounting bracket is connected with support by Elastic plastic-rubber part.
It is preferred that the curtain lower edge sets curtain weight linear meter.
It is preferred that the main shaft power device, to lift axle power set be motor.
Using such scheme, the beneficial effects of the utility model are：
1) solves the larger long stage casing sagging problem brought under the influence of gravity of curtain main shaft；
2) it is simple in construction, do not influence stretching, extension and the retraction of curtain while solving curtain stage casing sagging problem, it is convenient real
With.
Brief description of the drawings
Fig. 1 is the stereogram of the utility model embodiment 1；
Fig. 2 is the stereogram of the utility model embodiment 3；
Fig. 3 is the schematic diagram of the utility model embodiment 1；
Fig. 4 is the schematic diagram of the utility model embodiment 2；
Fig. 5 is the schematic diagram of the utility model embodiment 3；
Wherein, accompanying drawing identifier declaration：
1-mainshaft mechanism, 2-lift mechanism,
3-curtain, 4-support,
5-curtain weight linear meter, 6-master controller,
11-main shaft, 12-main shaft power device,
13-spindle gearing, 14-mainshaft mechanism controller,
15-main shaft speed change device, 16-speed of mainshaft sensor,
131-belt, 132-belt pulley,
21-lift axle, 22-axle power set are lifted,
23-lift shaft drive, 24-shaft transmission is lifted,
25-lift shaft speed transducer, 26-shaft mounting device,
27-lift mechanism controller, 28-axle sleeve is lifted,
261-mounting bracket, 262-Elastic plastic-rubber part,
2 '-lift mechanism, 21 '-axle is lifted,
25 '-lift shaft speed transducer, 26 '-shaft mounting device,
29-lift wheel, 261 '-mounting bracket,
262 '-Elastic plastic-rubber part.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
Referring to figs. 1 to shown in 5, a kind of projection screen system, including mainshaft mechanism 1, some lift mechanisms 2, curtain 3, support
4；The mainshaft mechanism 1, lift mechanism 2 are erected on support 4；The mainshaft mechanism 1 includes main shaft 11, mainshaft mechanism controls
Device 14, main shaft power device 12, spindle gearing 13, main shaft speed change device 15, speed of mainshaft sensor 16；The mainshaft mechanism
Controller 14 is electrically connected with main shaft power device 12；The drive shaft transmission device 13 of main shaft power device 12 drives main shaft
11 rotate, so as to realize the stretching, extension of curtain 3 and retraction；The main shaft power device 12 exports 11 turns of main shaft through main shaft speed change device 15
Rotating speed needed for dynamic；The speed of mainshaft sensor 16 is arranged near main shaft 11；The lift mechanism 2 is arranged on the both sides of main shaft 11
Lower section and the contact of the cylinder of main shaft 11, lift the curtain 3 of the winding of main shaft 11.
Embodiment 1：Main shaft 11 is driven by main shaft power device 12, is lifted axle 21 and is driven by lifting axle power set 22.
The lift mechanism 2 include lifting axle 21, it is consistent with lifting the length of axle 21 lift axle sleeve 28, lift mechanism controls
Device 27, axle power set 22 are lifted, shaft drive 23 is lifted, lifts shaft transmission 24, lifts shaft speed transducer 25；It is described
Axle 21 is lifted through lifting the through hole nested encryptions of axle sleeve 28；The lift mechanism controller 27 is electrical with lifting axle power set 22
Connection；It is described lift the driving of axle power set 22 and lift shaft drive 23 and drive lift axle 21 and rotate；It is described to lift axle power
Device 22 lifts rotating speed needed for axle 21 through lifting the output of shaft transmission 24；It is described lift shaft speed transducer 25 and be arranged on lift axle
Near 21；The shaft drive 23 of lifting includes being arranged on the skin lifted the output end of axle power set 22, lift the one end of axle 21
Belt wheel 132 and the belt 131 being nested on two belt pulleys 132.The projection screen system also includes master controller 6；The master control
Device 6 processed be electrically connected mainshaft mechanism controller 14, lift mechanism controller 27, speed of mainshaft sensor 16, lift axle turn
Fast sensor 25.
Embodiment 2：With the difference of embodiment 1, main shaft 11 drives with lifting axle 21 by main shaft power device 12 in embodiment 2
It is dynamic.
The lift mechanism 2 includes lifting axle 21, consistent with lifting the length of axle 21 lift axle sleeve 28, lifts axle and be driven and fill
23 are put, shaft transmission 24 is lifted, lifts shaft speed transducer 25；It is described that to lift axle 21 nested even through the through hole of axle sleeve 28 is lifted
Connect；The main shaft power device 22 is lifted axle 21 and rotated through lifting the driving of shaft drive 23；It is described to lift axle power set 22
Rotating speed needed for axle 21 is lifted through lifting the output of shaft transmission 24；The shaft speed transducer 25 of lifting is arranged on that to lift axle 21 attached
Closely；The shaft drive 23 of lifting includes being arranged on the output end of main shaft power device 12, lifting the belt pulley 132 of the one end of axle 21
With the belt 131 being nested on two belt pulleys 132.The projection screen system also includes master controller 6；The master controller 6 divides
Not electricity Xing Lianjie mainshaft mechanism controller 14, speed of mainshaft sensor 16, lift shaft speed transducer 25.The projection screen system
Also include master controller 6；Mainshaft mechanism controller 14, speed of mainshaft sensor 16, support is electrically connected in the master controller 6
Lift shaft speed transducer 25.
Embodiment 3：With the difference of embodiment 2, axle 21 is lifted in embodiment 3 and omits power set driving, lifts axle 21 not
Driving force is needed, it follows main shaft 11 to rotate.
The lift mechanism 2 ' includes lifting axle 21 ', lifts shaft speed transducer 25 ', at least one lifts wheel 29；The support
Lift axle 21 ' and be flexibly connected through 29 through holes of wheel are lifted with it；The shaft speed transducer 25 ' of lifting is arranged on that to lift axle 21 ' attached
Closely.The projection screen system also includes master controller 6；Mainshaft mechanism controller 14, master is electrically connected in the master controller 6
Shaft speed transducer 16, lift shaft speed transducer 25.
In addition, in above example 1-3, the spindle gearing 13 exports including being arranged on main shaft power device 12
End, the belt pulley 132 of the one end of main shaft 11 and the belt 131 that is nested on two belt pulleys 132.The mainshaft mechanism 1, lift mechanism
2 also include two shaft mounting devices 26；The shaft mounting device includes mounting bracket 261, four Elastic plastic-rubber parts 262；The installation
Frame 261 is connected with support 4 by Elastic plastic-rubber part 262.The lower edge of curtain 3 sets curtain weight linear meter 5.The main shaft power
Device 12, to lift axle power set 22 be motor.
Utility model works principle：
In the down either side of projection screen main shaft 11, lift mechanism 2/2 ' is set, it is long to solve the main shaft 11 that curtain 3 wound
The stage casing sagging problem brought under the influence of gravity.Lift mechanism 2/2 ' 2 contacts in the down either side of main shaft 11 and the cylinder of main shaft 11
And rotate together, the effect of lifting is played, head of a secret society's axle 11 shares pressure, reduces 11 sagging deformation of main shaft.Shaft mounting device 26/26 '
In mounting bracket 261/261 ' be connected with support 4 by Elastic plastic-rubber part 262/262 ' (or other non-rigid structure parts), with
Solve the scrolling number of turn of projection screen 3 it is more caused by between each mechanism tolerance fit caused by gap change and processing installation ask
Topic.Lift mechanism 2/2 ' can carry out the fine setting of relative position by Elastic plastic-rubber part 262/262 ', more preferable to accept main shaft 11 not
With the pressure distribution in region, i.e., the pressure of main shaft 11 that the lift mechanism 2/2 ' close to the centre position of main shaft 11 is born is larger, close
The pressure of main shaft 11 that the lift mechanism 2/2 ' at the both ends of main shaft 11 is born is smaller；Simultaneously in mainshaft mechanism 1 and lift mechanism 2/2 '
Play the loss for reducing impact of each axle when rotating and bringing, reduce the effect such as noise.
Embodiment 1 is that main shaft 11 is driven by main shaft power device 12, lifts axle 21 and is driven by lifting axle power set 22, such as
Shown in Fig. 3：
It is that a kind of main shaft 11 is very long shown in figure, and load is bigger, lift mechanism 2 includes lifting power set 22
System.
Control signal is transferred to mainshaft mechanism controller 14 and lift mechanism controller 27, mainshaft mechanism by master controller 6
Controller 14 controls main shaft power device 12 to export rotating speed needed for main shaft 11 through main shaft speed change device 15, and speed of mainshaft sensor 16 will
The speed feedback signal of main shaft 11 is to master controller 6；The control of lift mechanism controller 27 lifts axle power set 22 through lifting axle
Speed changer 24 output lift axle 21 needed for rotating speed, the speed feedback signal of axle 21 will be lifted to master control by lifting shaft speed transducer 25
Device 6 processed.Each road signal of the real-time reception of master controller 6 and the linear velocity for they being converted into each axle axial plane operation, with the face of main shaft 11
Linear velocity (curtain 3 advance speed) on the basis of other axles are compared.After comparison result is that difference is more than setting value
Instruction is sent to the controller of respective shaft immediately and carry out speed change, to ensure the stretching, extension of curtain 3 and the overall smooth-going of retraction.
Embodiment 2 is that main shaft 11 drives with lifting axle 21 by main shaft power device 12, as shown in Figure 4：
When being that a kind of main shaft 11 is shorter and systematic comparison is simple shown in figure, lift mechanism 2 and mainshaft mechanism 1 are shared and moved
The system of power.
Main shaft power device 12 by main shaft speed change device 15, lift tooth ratio different in shaft transmission 24 power output arrived
Main shaft 11 is with lifting axle 21.The tooth ratio of each speed changer passes through strict calculating, when shared a set of power set are defeated with identical rotating speed
It is fashionable to ensure that main shaft 11 is identical with the axial plane linear velocity for lifting axle 21 (in an acceptable error range).Axle is lifted to turn
Fast sensor 25 still retains, and report an error output or shutdown are carried out when finding and respectively lifting axle 21 and the excessive difference of main shaft 11.
Embodiment 3 drives to lift axle 21 ' without power set, and it follows main shaft 11 to rotate, as shown in Figure 5：
It is that a kind of system is very simple shown in figure, lifts the system that axle 21 ' only needs to follow main shaft 11 to rotate.
Lift axle 21 ' and do not need power set driving, only main shaft 11 need to be followed to rotate with regard to system requirements can be met.Now,
Still retain and lift shaft speed transducer 25 ' and they are compared in real time, axle 21 ' is stuck waits fortuitous event when occurring lifting
When, lift shaft speed transducer 25 ' and signal is fed back into master controller 6, carry out report an error output or shutdown.
Preferred embodiment of the present utility model is these are only, is not limited to the utility model, it is all in this practicality
All any modification, equivalent and improvement made within new spirit and principle etc., should be included in guarantor of the present utility model
Within the scope of shield.
Claims (10)
1. a kind of projection screen system, it is characterised in that including mainshaft mechanism, some lift mechanisms, curtain, support；The main shaft
Mechanism, lift mechanism are erected on support；The mainshaft mechanism include main shaft, mainshaft mechanism controller, main shaft power device,
Spindle gearing, main shaft speed change device, speed of mainshaft sensor；The mainshaft mechanism controller electrically connects with main shaft power device
Connect；The main shaft power device drive shaft transmission device drives main axis, so as to realize the stretching, extension of curtain and retraction；It is described
Main shaft power device is through rotating speed needed for main shaft speed change device output main axis；It is attached that the speed of mainshaft sensor is arranged on main shaft
Closely；The lift mechanism is arranged on main shaft down either side and the contact of main shaft cylinder, lifts the curtain of main shaft winding.
2. projection screen system according to claim 1, it is characterised in that the lift mechanism includes lifting axle, with lifting
Shaft length is consistent to be lifted axle sleeve, lift mechanism controller, lifts axle power set, lift shaft drive, lift axle speed change
Device, lift shaft speed transducer；The axle of lifting is through lifting axle sleeve through hole nested encryptions；The lift mechanism controller and support
Axle power set are lifted to be electrically connected with；It is described lift axle power set driving lift shaft drive drive lift axle rotation；It is described
Lift axle power set and lift rotating speed needed for axle through lifting shaft transmission output；It is described lift shaft speed transducer and be arranged on lift
Near axle；It is described lift shaft drive include being arranged on lift axle power set output end, lift the belt pulley of axle one end with
The belt being nested on two belt pulleys.
3. projection screen system according to claim 1, it is characterised in that the lift mechanism includes lifting axle, with lifting
Shaft length is consistent to be lifted axle sleeve, lifts shaft drive, lift shaft transmission, lift shaft speed transducer；It is described to lift axle
Through lifting axle sleeve through hole nested encryptions；The main shaft power device lifts axle rotation through lifting shaft drive driving；It is described
Lift axle power set and lift rotating speed needed for axle through lifting shaft transmission output；It is described lift shaft speed transducer and be arranged on lift
Near axle；It is described lift shaft drive include being arranged on main shaft power device output end, lift the belt pulley of axle one end with it is embedding
The belt being enclosed on two belt pulleys.
4. projection screen system according to claim 1, it is characterised in that the lift mechanism includes lifting axle, lifting axle
Speed probe, at least one lift wheel；It is described lift axle through lift wheel through hole be flexibly connected with it；It is described to lift rotating speed biography
Sensor, which is arranged on, to be lifted near axle.
5. projection screen system according to claim 2, it is characterised in that the projection screen system also includes master controller；
The master controller be electrically connected mainshaft mechanism controller, lift mechanism controller, speed of mainshaft sensor, lift axle turn
Fast sensor.
6. the projection screen system according to claim 3 or 4, it is characterised in that the projection screen system also includes main control
Device；The master controller is electrically connected mainshaft mechanism controller, speed of mainshaft sensor, lifts shaft speed transducer.
7. projection screen system according to claim 6, it is characterised in that the spindle gearing includes being arranged on main shaft
Power set output end, the belt pulley of main shaft one end and the belt that is nested on two belt pulleys.
8. projection screen system according to claim 7, it is characterised in that the mainshaft mechanism, lift mechanism also include
Two shaft mounting devices；The shaft mounting device includes mounting bracket, four Elastic plastic-rubber parts；The mounting bracket is moulded with support by elasticity
Glue part connects.
9. projection screen system according to claim 8, it is characterised in that the curtain lower edge sets curtain weight linear meter.
10. projection screen system according to claim 9, it is characterised in that the main shaft power device, lift axle power dress
It is motor to put.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720608038.6U CN206906784U (en) | 2017-05-27 | 2017-05-27 | A kind of projection screen system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720608038.6U CN206906784U (en) | 2017-05-27 | 2017-05-27 | A kind of projection screen system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206906784U true CN206906784U (en) | 2018-01-19 |
Family
ID=61286306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720608038.6U Active CN206906784U (en) | 2017-05-27 | 2017-05-27 | A kind of projection screen system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206906784U (en) |
-
2017
- 2017-05-27 CN CN201720608038.6U patent/CN206906784U/en active Active
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