CN206555324U - A kind of clutch for classroom projector screen elevating control - Google Patents
A kind of clutch for classroom projector screen elevating control Download PDFInfo
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- CN206555324U CN206555324U CN201720243016.4U CN201720243016U CN206555324U CN 206555324 U CN206555324 U CN 206555324U CN 201720243016 U CN201720243016 U CN 201720243016U CN 206555324 U CN206555324 U CN 206555324U
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- rotor
- shell
- slideway
- driving shaft
- centrifugal slider
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Abstract
The utility model discloses a kind of clutch for classroom projector screen elevating control, it includes：Driving shaft (1), rotor (2), centrifugal slider (3), friction (4), back-moving spring (5), shell (6)；Driving shaft (1) connects the drive shaft of classroom projector screen stepper motor, shell (6) is boring structure, rotor (2) is provided with shell (6) boring structure, rotor (2) and shell (6) concentric fits, rotor (2) hollow inner circle be provided with internal spline, rotor (2) inner circle be enclosed on driving shaft (1) it is cylindrical on；The utility model provides a kind of good structure of simple in construction, with low cost, practical performance to solve the problem of roller shutter type screen toggle speed is fast.
Description
Technical field
The utility model is related to field of stationery, more particularly to a kind of clutch for classroom projector screen elevating control
Device.
Background technology
At present, with the continuous popularization of video teaching means and perfect, projecting apparatus has been that school instruction is widely used
A kind of instrument, projecting apparatus screen is into indispensable kit.Current projecting apparatus screen is mainly divided to two kinds, and one kind is solid
Fixed screen above is scheduled on, a kind of is the roller shutter type screen that can be packed up under motor drive.
The roller shutter type screen driven for motor, generally directly drives screen rotating shaft by stepper motor, but due to stepping
Motor speed is higher, in start-up course, and certain impact power can be carried out to screen belt, commonly using when, screen can be damaged.
In order to reduce the speed of stepper motor, conventional mode is increase decelerator at present, but is added using decelerator
The cost for using and repairing, it is, thus, sought for a kind of good structure of simple in construction, with low cost, practical performance come solve volume
The problem of curtain screen toggle speed is fast.
Clutch, as the term suggests that is transmit appropriate power using "Off" and " conjunction ".Clutch is machine driving
In common components, transmission system can be separated or engaged at any time.Have to its basic demand:Smooth engagement, is separated rapid and thorough
Bottom；Regulation and repairing are convenient；Contour dimension is small；Quality is small；Wearability is good and has enough heat-sinking capabilities；It is easy to operate；
When transmission system is overloaded, certain protective effect can be played.
Centrifugal clutch is to apply to obtain a very common class clutch, and it is substantially made up of three parts：Driving link, from
Central member and driven member.The driving and driven part of centrifugal clutch is really sliding friction in the cohesive process not up to synchronous axial system
Journey, can there are the phenomenon of frictional heating and friction pair abrasion in the process, therefore centrifugal clutch should not be used in Fraquent start
Operating mode；When hypervelocity is rotated, relative slide can occur with shell and skidding occur for brake pad, cause power output
Interrupt.Therefore by improving clutch configuration, roller shutter type screen can be applied into everybody question of common concern.
Utility model content
The purpose of this utility model be for prior art described above exist it is not enough there is provided one kind it is simple in construction,
A kind of good clutch for classroom projector screen elevating control of with low cost, practical performance.
To achieve these goals, the utility model provides a kind of clutch for classroom projector screen elevating control
Device, it includes：Driving shaft, rotor, centrifugal slider, friction, back-moving spring, shell；It is characterized in that：
Driving shaft connects the drive shaft of classroom projector screen stepper motor, and shell is boring structure, in shell
Rotor, rotor and shell concentric fits are provided with portion's hollow-core construction, the hollow inner circle of rotor is provided with internal spline, and rotor inner circle is enclosed on
On driving shaft is cylindrical, external splines is also provided with rotor internal spline corresponding position driving shaft is cylindrical, and both driving shaft and rotor pass through
The spline of mutual cooperation is attached；
Rotor outer circle is circumferentially evenly equipped with six slideways, and slideway is to accommodate to set in centrifugal slider, slideway in rectangular shape, slideway
There is centrifugal slider, centrifugal slider totally six, axial both sides progress of the slideway to centrifugal slider is spacing, and slideway is simultaneously also to centrifugal slip
The radial motion of block has guide effect；
A friction plate is respectively connected with the outside of each centrifugal slider, the friction plate inner circle circular arc curvature radius is equal to centrifugation
The cylindrical circular arc curvature radius of sliding block, the cylindrical circular arc curvature radius of friction plate is equal to shell inner circle circular arc curvature radius, and friction plate exists
When being fitted with outer casing inner wall, frictional force can be produced；The Roller for roller blind synchronous rotary of shell and classroom projector screen；In formation
Individual back-moving spring altogether is additionally provided with slideway.
Further, the beneficial effect for being attached this programme by fixing bolt between back-moving spring and rotor is：
Friction and the drive characteristic of latch can be taken into account in power transmission process simultaneously, and can be when hypervelocity, generation are skidded relatively
Continue to keep power output, it is adaptable to high rotating speed, the operating mode of high-power output, with higher engineering application value.
The beneficial effects of the utility model are：
(1) utility model provides a kind of good structure of simple in construction, with low cost, practical performance to solve roller shutter type
The problem of screen toggle speed is fast；
(2) the clutch smooth engagement described in the utility model, is separated rapid and thorough；Regulation and repairing are convenient；Gabarit
Size is small；Quality is small；Wearability is good and has enough heat-sinking capabilities；It is easy to operate；When transmission system is overloaded, one can be played
Fixed protective effect, can effectively prevent that roller shutter type screen toggle speed is fast.
Brief description of the drawings
Fig. 1 is the structural representation of the clutch embodiment described in the utility model for classroom projector screen elevating control
Figure；
The machine that Fig. 2 clutches described in the utility model for classroom projector screen elevating control are responded in lower-speed state
Structure schematic diagram；
The machine that Fig. 3 clutches described in the utility model for classroom projector screen elevating control are responded in fast state
Structure schematic diagram.
Wherein：1- driving shafts, 2- rotors, 3- centrifugal sliders, 4- frictions, 5- back-moving springs, 6- shells.
Embodiment
Explanation is described in detail to the utility model below in conjunction with the drawings and specific embodiments.
As shown in figure 1, this embodiment offers a kind of clutch for classroom projector screen elevating control, it is wrapped
Include：Driving shaft 1, rotor 2, centrifugal slider 3, friction 4, back-moving spring 5, shell 6；Wherein：Driving shaft 1 connects classroom projector screen
The drive shaft of curtain stepper motor, shell 6 is boring structure, and rotor 2, rotor 2 are provided with the boring structure of shell 6
With the concentric fits of shell 6, the hollow inner circle of rotor 2 be provided with internal spline, the inner circle of rotor 2 be enclosed on driving shaft 1 it is cylindrical on, in driving shaft 1
Cylindrical place relative with the internal spline of rotor 2 is also provided with external splines, and both driving shaft 1 and rotor 2 are carried out by the spline of mutual cooperation
Connection.
The cylindrical circumference of rotor 2 is evenly equipped with six slideways, and slideway is that centrifugal slider 3, adjacent two are accommodated in rectangular shape, slideway
The distance between individual slideway is less than the width of centrifugal slider 3, is provided with centrifugal slider 3 in slideway, centrifugal slider 3 totally six, slideway
Axial both sides progress to centrifugal slider 3 is spacing, while also the radial motion to centrifugal slider 3 has guide effect.
A friction plate 4 is respectively connected with the outside of each centrifugal slider 3, the inner circle circular arc curvature radius of friction plate 4 is equal to
The cylindrical circular arc curvature radius of centrifugal slider 3, the cylindrical circular arc curvature radius of friction plate 4 is equal to the inner circle circular arc curvature radius of shell 6, rubs
Pad 4 can produce larger frictional force when being fitted with the inwall of shell 6, so that the transmission of power is more reliable.Shell 6 and religion
The Roller for roller blind synchronous rotary of room projecting apparatus screen.
6 back-moving springs 5 altogether are additionally provided with the slideway of formation, fixing bolt is passed through between back-moving spring 5 and rotor 2
It is attached.
Operation principle of the present utility model is：Back-moving spring is set in the inner radial surface of slideway, back-moving spring is to centrifugation
Sliding block produces radial pull, when driving shaft is static or during relatively low speed, under the pulling force of back-moving spring, centrifugal slider and shell point
From not transmitting moment of torsion now, be the released state of clutch, as shown in Figure 1；
When driving shaft rotating speed reaches certain value, centrifugal slider produces larger centrifugal force, the direction of centrifugal force and pulling force
It is in opposite direction, when centrifugal force is more than pulling force, centrifugal slider will move to direction where centrifugal force, i.e. centrifugation iron block is along slideway
Outside shell side is to motion, and when centrifugation iron block is fitted with shell, centrifugation iron block will drive shell to move together, so as to reach transmission
The purpose of moment of torsion, that is, realize the engagement of clutch, as shown in Figure 2；
When centrifugal force continues to increase, the frictional force that brake pad is produced is not enough to produce when driving shell to rotate and slided relatively
Dynamic, brake pad will slide into corresponding screens along the slideway that outer casing inner wall is provided with, and brake pad now is similar to screens
The formation of meshed gears structure is rigidly connected, so as to continue to drive the rotation of shell, it is ensured that effective output of power, such as accompanying drawing 3
It is shown；When centrifugal force weakens, the rotating speed of shell is more than the rotating speed of rotor, and brake pad is received in the presence of back-moving spring to axle center
Moved after contracting a certain distance, brake pad direction of relative movement along slideway, stop suitable position, now shell and rotor
Rotating speed reach synchronization again, as shown in Figure 2；
When centrifugal force continues to weaken, the rotating speed of brake pad is less than the rotating speed of shell, and brake pad will depart from and shell
With reference to, the output of interruption power, as shown in Figure 1.
General principle of the present utility model, principal character and advantage of the present utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification
Simply illustrate principle of the present utility model, the utility model can also on the premise of the utility model spirit and scope are not departed from
There are various changes and modifications, these changes and improvements are both fallen within the range of claimed the utility model.The utility model will
Protection domain is asked to be defined by appended claims and its equivalent..
Claims (2)
1. a kind of clutch for classroom projector screen elevating control, it includes：Driving shaft (1), rotor (2), centrifugal slip
Block (3), friction (4), back-moving spring (5), shell (6)；It is characterized in that：
Driving shaft (1) connects the drive shaft of classroom projector screen stepper motor, and shell (6) is boring structure, in shell
(6) rotor (2), rotor (2) and shell (6) concentric fits are provided with boring structure, rotor (2) hollow inner circle is provided with interior
Spline, rotor (2) inner circle be enclosed on driving shaft (1) it is cylindrical on, also opened with rotor (2) internal spline corresponding position driving shaft (1) is cylindrical
There is an external splines, both driving shaft (1) and rotor (2) are attached by the spline of mutual cooperation；
Rotor (2) cylindrical circumference is evenly equipped with six slideways, and slideway is to be accommodated in rectangular shape, slideway in centrifugal slider (3), slideway
Provided with centrifugal slider (3), centrifugal slider (3) totally six, axial both sides progress of the slideway to centrifugal slider (3) is spacing, and slideway is same
When radial motion also to centrifugal slider (3) have guide effect；
A friction plate (4) is respectively connected with the outside of each centrifugal slider (3), friction plate (4) the inner circle circular arc curvature radius etc.
In the cylindrical circular arc curvature radius of centrifugal slider (3), it is bent that the cylindrical circular arc curvature radius of friction plate (4) is equal to shell (6) inner circle circular arc
Rate radius, friction plate (4) can produce frictional force when being fitted with shell (6) inwall；Shell (6) and classroom projector screen
Roller for roller blind synchronous rotary；(6) individual back-moving spring (5) altogether is additionally provided with the slideway of formation.
2. a kind of clutch for classroom projector screen elevating control according to claim 1, it is characterised in that：It is multiple
It is attached between position spring (5) and rotor (2) by fixing bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720243016.4U CN206555324U (en) | 2017-03-14 | 2017-03-14 | A kind of clutch for classroom projector screen elevating control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720243016.4U CN206555324U (en) | 2017-03-14 | 2017-03-14 | A kind of clutch for classroom projector screen elevating control |
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| Publication Number | Publication Date |
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| CN206555324U true CN206555324U (en) | 2017-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720243016.4U Active CN206555324U (en) | 2017-03-14 | 2017-03-14 | A kind of clutch for classroom projector screen elevating control |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109653953A (en) * | 2018-12-26 | 2019-04-19 | 李善祥 | A kind of novel artificial intelligent wind power power generator |
| CN110340970A (en) * | 2019-06-26 | 2019-10-18 | 谢丽华 | A kind of feed apparatus of die cutting machine being centrifuged anti-slip |
| CN110748602A (en) * | 2019-11-06 | 2020-02-04 | 西南石油大学 | Two-stage centrifugal type energy storage flywheel with variable rotational inertia |
| CN112936637A (en) * | 2021-01-29 | 2021-06-11 | 贵州大众橡胶有限公司 | Automobile rubber diaphragm processing device |
| CN112983709A (en) * | 2019-12-18 | 2021-06-18 | 重庆隆鑫通航发动机制造有限公司 | Centrifugal overload protection starting drive and engine |
| CN115059701A (en) * | 2022-07-28 | 2022-09-16 | 常州鼎森传动科技有限公司 | Centrifugal speed regulation clutch |
-
2017
- 2017-03-14 CN CN201720243016.4U patent/CN206555324U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109653953A (en) * | 2018-12-26 | 2019-04-19 | 李善祥 | A kind of novel artificial intelligent wind power power generator |
| CN110340970A (en) * | 2019-06-26 | 2019-10-18 | 谢丽华 | A kind of feed apparatus of die cutting machine being centrifuged anti-slip |
| CN110748602A (en) * | 2019-11-06 | 2020-02-04 | 西南石油大学 | Two-stage centrifugal type energy storage flywheel with variable rotational inertia |
| CN112983709A (en) * | 2019-12-18 | 2021-06-18 | 重庆隆鑫通航发动机制造有限公司 | Centrifugal overload protection starting drive and engine |
| CN112936637A (en) * | 2021-01-29 | 2021-06-11 | 贵州大众橡胶有限公司 | Automobile rubber diaphragm processing device |
| CN112936637B (en) * | 2021-01-29 | 2022-08-30 | 贵州大众橡胶有限公司 | Automobile rubber diaphragm processing device |
| CN115059701A (en) * | 2022-07-28 | 2022-09-16 | 常州鼎森传动科技有限公司 | Centrifugal speed regulation clutch |
| CN115059701B (en) * | 2022-07-28 | 2024-02-09 | 常州鼎森传动科技有限公司 | Centrifugal speed regulation clutch |
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