CN2604507Y - Electric rolling curtain protection window - Google Patents

Abstract

The utility model discloses a protective window equipped with an electric rolling blind made of an aluminum alloy, characterized by small mass and pleasant appearance. The utility model comprises a AC (DC) motor installed in a rolling roller, a worm wheel and worm speed reducer, a spiral spring, a polyurethane-foamed hollow aluminum alloy rolling blind and a sealing measure arranged at the window edge. The utility model is characterized by small bulk for a drive device greatly reduced in terms of outline, pleasant appearance, flexible electric operating assisted by a manual device and no noise, suitable to be applied at a house and an office building to protect a door or a window.

Description

Electric rolling curtain protection window

One, technical field

The utility model relates to electric rolling curtain protection window and the protective door of a kind of dwelling house and office building use.

Two, background

At present, China's dwelling construction cause is flourish, and people's living conditions improve day by day. But, antitheft for family, various protective window are had to again install in newly-built house. At present, what generally adopt is guard rail, iron art products and the stainless steel guard rail that reinforcing bar is welded, because these guard rails all have climbability, therefore, as long as one deck has been installed guard rail, then two layers are forced to also guard rail to be installed, such three, four layers etc. also have in succession install guard rail for antitheft, this gave originally very, and the handsome residence residential quarter has increased discordant note, have a strong impact on the appearance of the city, utterly spoil the fun, become " skin disease " in city, simultaneously, also bring many hidden danger to resident family.

1, the resident family that guard rail is not installed is consisted of security threat.

2, because guard rail is fixing dead, so in case of emergency (such as fire), indoor personnel can't escape, and the external world also can't rescue, and causes easily the heavy losses of lives and properties, and this respect example occured a lot of in the whole nation, too numerous to enumerate.

3, guard rail made of iron has shielded the magnetic field of the earth. Building itself has used a large amount of reinforcing bars to be used for the building of floor, body of wall, has in very large range shielded the magnetic field of the earth, and only the surplus window passage that can import earth magnetism is also shielded by guard rail made of iron. People live in the environment that does not have earth magnetism and can suffer from various diseases, healthy totally unfavorable to the people.

Three, summary of the invention

The utility model electric roll-up window is made of drive system and the aluminium alloy hollow foaming roller shutter leaf that phase synchronization permanent split capacitor motor or dc motor and worm-gear speed reducer and helical spring form.

1, the basic structure of roll-up window and force analysis

The section of roll-up window is that the roller of the circle roller shutter leaf of reeling forms.

Set:

(1) to the roll-up window of certain width (such as 1500mm), every meter high weight of roller shutter

Be W/ (kg/m). (2) initial radium be r. (mm) (3) roller shutter leaf thickness be c (mm) then: the length (highly) that the radius of (4) roller shutter can be expressed as r=r.-c β/2 π (5) roller shutter can be expressed as L=L₀+∫rdβ      ＝L ₀+∫(r ₀-cβ/2π)dβ

 ＝L ₀+r ₀β-cβ ²The weight of/4 π (6) roller shutter can be expressed as

P＝L×w/1000＝w(L ₀+r ₀β-cβ ²/ 4 π)/1000 the moment of torsion of (7) roller shutters is

T＝9.8Pr

 ＝9.8w(L ₀+r ₀β-cβ ²/4π)(r ₀*cβ/2π)/1000

 ＝9.8L ₀r ₀w/1000+9.8w(r ₀ ²-cL ₀/2π)β/1000

-9.8×3cwr ₀β ²/4000π+9.8c ²wβ ³/8000π ²(Nmm) with standard window (1500^mm×1500 ^mm) be example, selecting following parameters 1.w=7.5kg/m 2.c=6mm 3. roller skeleton radiuses is 30mm, five circles of reeling altogether. Roller shutter maximum radius r then₀＝30+5×6＝60mm 4.L ₀=120mm is L=L then₀+r ₀β-6β ²/4π

    ＝120+60β-0.48β ² T＝9.8L ₀r ₀w/1000+9.8w(r ₀ ²-cL ₀/2π)β/1000-9.8×3CWr ₀β ²/4000π    +9.8c ²wβ ³/8000π ²  ＝9.8×120×60×7.5/1000+9.8×7.5(60 ²-6×120/2π)β/1000-9.8×3×6 ×7.5×60β ²/4000π+9.8×6 ²×7.5×β ³/8000π ² ＝529+256β-6.32β ²+0.034β ³ dT/dβ＝256-12.64β+0.102β ²Make dT/d β=0 item $\mathrm{\β}=(12.64\±\sqrt{{12.64}^2-4\×0.102\×256)})/(2\×0.102)$ $=(12.64\±7.44)/0.204$ β ₁=(12.64-7.44)/0.204=25.49=8.1 π (about four circle, maximum point) β₂=(12.64+7.44)/0.204=98.43=31.3 π (about 15 circles half are cast out this subject is meaningless) below will mainly put and correlation data calculation and example are shown as follows:

β (radian)	L(mm)	T(Nmm)
			0	120	529
2π	478	1896
			4π	798	2815
6π	1080	3336
			8π	1324	3510.6
8.1π	1336	3511.2
			10π	1531	3389

For the volume that makes the roll-up window assembly is done littlely, so that its appearance is more attractive in appearance, will reduce to greatest extent the power of drive system, at the roller shutter roller cylindroid helical-coil torsion spring is set for this reason, in order to offset the gravity torque of most of roller shutter leaf in lifting process, make the power of drive system do minimumly.

The characteristic of cylindroid helical-coil torsion spring is that the moment of torsion of spring is directly proportional with its anglec of rotation, and larger its reactive torque of the anglec of rotation is just large, and as shown above, selecting the curve of spring is curve 2.

2, spring design calculates

(1) known parameters: maximum functional torque Tmax=3800Nmm

Minimum operation torque Tmin=760Nmm

Operation torque angle Φ=Φ max-Φ min=10 π

                         ＝1800°

Load cycle times N=6 times/day * 365 * 30 years=65700

Rigidity k t=3800/[10 π-(2.5 π)]

=96.82Nmm/ radian

                          ＝1.69Nmm/(°)

(2) material is selected

By its working condition, belong to II class spring, select B level intensity, the carbon spring steel wire material. Checking in its relevant parameter is:

Allowable shear stress [τ]=0.4 σ_b

Permissible bending stress [σ_b]＝0.5σ _b

(3) estimate and get the spring wire diameter

Estimate and get spring wire diameter d=4mm σ that tables look-up to get_b＝1471MPa

[τ]＝0.4×1471＝588.4MPa

[σ _b]＝0.5×1471＝735.5MPa

(4) calculate the spring wire diameter d

Get and curl up than C=6, then curvature correction factor

K _T＝(4C-1)/(4C-4)＝1.15 $d^{\′}\≥\sqrt[3]{\left(K_{T}T\max \right)/0.1\[\]}$ $=\sqrt[3]{(1.15\×3800)/(0.1\×735.5)=3.90}$

Therefore get d=4^mmSuitable.

(5) basic parameter of spring;

Central diameter D '=Cd=6 * 4=24mm consideration roller other factors is got D=26mm

Outer diameter D 2=D+d=26+4=30mm

Inside diameter D 1=D-d=26-4=22mm

Get gapping of spring δ=0.5mm

Pitch t=d+ δ=4+0.5=4.5mm

Pitch angle alpha will=arctg (t/ π D)

    ＝arctg(4.5/26π)

    ＝3.15°

(6) determine the number of effective coils of spring

Table look-up the to get elastic modulus E=2 * 10 of spring⁵Mpa

Active spring coils is counted n=(K_TEφd)/360D[ ]

             ＝(1.15×2×10 ⁵×1800×4)/(360×26×588,4)

=301 circles (7) calculate the rigidity k ' x=(Ed of spring⁴)/(3667Dn)＝(2×10 ⁵×4 ⁴)/(3667 * 26 * 301) so=1.78 because of selected KT=1.69 n=(2 * 10⁵×4 ⁴)/(3667×26×1.69)

Resultant moment (1) Tt of the length L=tn=4.5 of=318 circle (8) springs * 318=1431mm 3. rollers₀/3800＝2.5π/12.5π    Tt ₀＝3800×(2.5/12.5)＝760Nmm    Tt＝Tt ₀+k _T* β=760+96.82 β resultant moment Δ T=T-Tt

 ＝(529-760)+(256-96.82)β-6.32β ²+0.034β ³

 ＝-231+159.18β-6.32β ²+0.034β ³Make (d Δ t)/(d β)=159.18-12.64 β+0.102 β²=0 $\mathrm{\β}=(12.64\±\sqrt{{12.64}^2-4\×159.18\×0.102})/(2\×0.102)$ $=(12.64\±9.74)/0.204$

β ₁＝(12.64-9.74)/0.204＝4.53π

β ₂=(12.64+9.74)/0.204=35 π (meaningless cast out) resultant moment maximum is Δ Tmax=-231+159.18 * 4.53 π-6.32 * (4.53 π)²+0.034×(4.53π) ³=-231+2264-1279+98=852 (Nmm)=0.852Nm 4. determines that the input power of drive system (1) the worm-gear speed reducer reductor of electric roll-up window is P₂＝(ΔTmax×n ₂* 2 π)/(60 * η)=(0.852 * 17 * 2 π)/(60 * 0.6)=2.53w wherein, η is that the efficient of reductor is got 0.6, n₂For the speed of roller shutter roller, get 17rpm

Select the WWJZ25-30DZ type reductor of the production of Foshan Bei Jiang micro-reducer company, its parameter is n₁＝1000rpm  i＝60  n ₂＝16.67rpm  M ₂＝18Nm

Volume is shown in accompanying drawing two, and this reductor surplus is very large, can also select other model less than this reductor.

(2) motor

1. exchange and drive

Select 45T2511 type magnetic hysteresis capacitor operating synchronous motor, its parameter is as follows:

U＝220V  f＝50HZ  n＝3000rpm  Ie＝0.1A  P ₂＝4.5w

M _q=Me=14.41Nm, motor diameter 45mm

Motor is that 3 belt pulley is connected with worm screw through speed ratio, therefore, and overall ratio

I is total=3 * 60=180

Motor side load torque capacity is Δ Tmax '=Δ Tmax/180=4.73Nmm

This selection of Motor meets the demands

2. direct drive

Select 36M832 type dc motor, its parameter is as follows:

U＝24V  Me＝24.5Nm  n＝3000rpm  P＝7.7W  I＝0.65A

Motor diameter 36mm

DC motor drive, and be equipped with dc source with battery, the use that can when AC outage, do as usual, and can cancel hand gear in the accompanying drawing two.

(3) connected mode of motor and reductor is taked motor and reductor to install back-to-back to be respectively 10mm by diameter to be connected belt pulley with 30mm and to be connected, can reduce like this worm shaft to size, its cumulative volume is reduced.

6, the design of roller shutter leaf

The roller shutter leaf is designed to hollow aluminium alloy, is camber, is convenient to reel, and hollow position adopts polyurethane foaming, shown in accompanying drawing three. The sound insulation of this roller shutter leaf, changed the intrinsic frequency of self, sound is very little when knocking and colliding, can not produce the vibration noise, the roller shutter leaf is provided with the printing opacity mouth of 15mm * 2mm, adjusts the unlatching quantity of the lifting capable of regulating printing opacity mouth of roller shutter, so that indoor light transmission ventilation, when roller shutter all descends the end, printing opacity oral pore Close All.

Four, description of drawings

0 is counter and upper and lower spacing device, and 1 is H end cap square shaft, and 2 is that bearing 1,3 is gear Z₀=30 teeth, 4 is roller shutter roller (aluminium alloy or stainless steel), and 5 are reinforcement iron iron plate (2mm), and 6 is hollow shaft, and 7 is counter input gear Z₁=50 teeth, 8 are self tapping gong nail, 9 is the plastics link stopper, 10 are reinforcement iron plate (2mm), and 11 is that bearing 2,12 is reductor output square shaft, 13 is manual opener, and 14 is sealing strip, and 15 is polyurethane foaming, 16 is pulling rivet, and 17 is manual opener, and 18 is the door limit, 19 is manual opener, and 20 is worm-gear speed reducer, and 21 is motor, 22 is loophole, and 23 is counter gear Z₂=10 teeth, 24 is counter input gear Z₁, 25 is counter gear Z₃＝38

Five, the specific embodiment

The operation principle of electric roll-up window

1. motor drives worm-gear speed reducer through belt pulley, and reductor output square shaft drives the aluminium alloy roller, and the other end of aluminium alloy roller (H end) is connected with hollow shaft through bearing 1. The H end of hollow shaft is connected with the end cap square shaft and fixes with pin. The hollow shaft other end is connected with speed reducer output shaft through bearing 2.

2. the spiral torsion spring is fixed with hollow shaft at the H end, fixes two respectively reinforcement of stiff end at the other end (G end) and aluminium alloy roller.

3. during the whole opening of roller shutter, the moment of torsion of spring minimum (760Nmm) is along with roller shutter decline spring torque increases thereupon, when roller shutter all drops to the end, and spring torque maximum (3800Nmm).

4. the H of hollow shaft end is also installed a gear Z. With counter input gear Z₁Engagement.

5. the roller shutter state that all descends, printing opacity mouth Close All, when opening roller shutter, the roller shutter from top to down is opened the printing opacity mouth.

6. the setting of counter.

Counter is returned zero spanner place " 0 " position, upper and lower spacing counting gear Z₃(Z’ ₃) disengaging Z₂Engagement, torsion spring is with Z₃(Z’ ₃) rebound with " zero " position, namely bump iron the microswitch normally closed contact is opened.

Open roll-up window, when roll-up window drops to minimum point, the lower limit spanner is placed " work " position, gear Z ' by " 0 "₃With the Z engagement, setting completed for lower limit. When roller shutter is raised to peak, the upper limit spanner is placed work " position ", gear Z by " 0 "₃With Z₂Engagement, setting completed for upper limit.

Six, the characteristics of motorized shutter.

1. motor greatly reduces the volume of drive system through the connecting mode of belt pulley and worm-gear speed reducer and be equipped with helical spring, and the hidden roller assembly that is contained in, and is handsome in appearance, also is convenient to embed built-in installation.

2. drive for exchanging, be provided with hand gear. When having a power failure, available dedicated spanner, manually opened roll-up window, particularly important when emergency (particularly important when having a power failure such as fire).

3. for direct drive, adopt DC operation. During normal operation, alternating current through voltage-stabilized power supply to the battery pack floating charging. When AC outage, battery-operated. Can be described as and round-the-clockly all can work, especially in case of emergency, more show its advantage place such as fire.

4. roll-up window is light and handy, the lifting noiselessness, and deadening is arranged.

5. be provided with loophole in the roller shutter, the unlatching quantity of loophole is controlled. Be convenient in the situation of closing printing opacity, ventilation.

Seven, nine in accompanying drawing is attached altogether for the application.

Claims (4)

1, a kind of electric rolling curtain protection window, it forms drive unit by motor drives worm-gear speed reducer and spring and roller, roller drives roller shutter, it is characterized in that helical spring overcomes the moment that roller shutter produces, and makes the reductor output torque be far smaller than the moment of the generation of roller shutter, power and the volume of drive system are reduced greatly, and hidden being contained in the roller shutter roller assembly, worm-gear speed reducer possesses self-locking action, can make roller shutter rest on arbitrary position.

2, electric roll-up window according to claim 1, it both can exchange driving, but also direct drive it is characterized in that, exchange to drive and be provided with hand gear, in order to use when having a power failure; Direct drive is all weather operations, exchanges as usual work when having a power failure.

3, electric roll-up window according to claim 1 is characterized in that the roller shutter leaf is hollow aluminium alloy, and is inner with the macromolecular material foaming, makes its reduction noise, and lightweight, intensity is high. The roller shutter leaf is provided with the printing opacity mouth, adjusts the roller shutter lifting position, and capable of regulating printing opacity mouth quantity makes its light transmission ventilation when roller shutter is closed, but also Close All printing opacity mouth.

4, electric roll-up window according to claim 1 is characterized in that, it can externally be installed, and also can embed built-in installation.

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