CN2353877Y

CN2353877Y - Blind lifting mechanism with constant force balance

Info

Publication number: CN2353877Y
Application number: CN 98252121
Authority: CN
Inventors: 王惟正; 徐雅威; 胡高福仁; 郑陈嵚
Original assignee: Industrial Technology Research Institute ITRI; Nien Made Enterprise Co Ltd
Current assignee: Industrial Technology Research Institute ITRI; Nien Made Enterprise Co Ltd
Priority date: 1998-12-23
Filing date: 1998-12-23
Publication date: 1999-12-15
Anticipated expiration: 2008-12-23

Abstract

A constant force balanced shutter lifting mechanism comprises a blade group, a blade rolling rope and a constant torque rolling component; wherein the blade group is provided with a plurality of blades; the blade rolling rope is connected with each blade of the blade group and penetrates through the bottommost end of the blade group; the constant-torque winding assembly is arranged at the top end of the blade group and is provided with a rope winding component and a constant-torque spring unit, and the rope winding component is wound with the blade winding rope; the constant torque spring unit is linked with the rope winding member and is provided with a constant torque spring which has constant return releasing prestress.

Description

The shutter elevating mechanism of constant force balance

The utility model relates to the shutter lifting structure, and detailed is the shutter elevating mechanism that refers to a kind of constant force balance.

Press, shutter is to be installed on the window, and its purposes is attractive in appearance and intercepts the light penetration person, is to have the formed vane group of plurality of vanes; It is by the shutheight of the control vane group size with the whole resistance of decision shutter light area, in addition by the angle of inclination of each blade of control to determine each interlobate printing opacity gap;

Press again, in the control mode of commonly using blade of louver window group adjustable height and stop position, driven by a stay cord elevating mechanism, this elevating mechanism has a vertical outer outer stay cord of blade that places, an one vane group stay cord and a gear stopper assembly, should outer stay cord be to expose to the curtain side wherein so that the staff pulling to be provided, this vane group stay cord is to link vane group is arranged, mode by the outer stay cord of pulling, make vane group stay cord interlock and and then control vane group lift in height person, drive this gear stopper assembly simultaneously and form states such as stopper or disengaging, and this vane group fixed down at an arbitrary position or be the jacking condition person that can spur.

The above-mentioned structure of commonly using, be beyond stay cord expose to the lifting of operation blade of curtain side so that the staff pulling to be provided; This kind exposes the mode of operation of stay cord, though still have a convenience,, but form a kind of potential hazards in the life for the child, in case misoperation or have and form to disobey the safe part of evil, even the child is taken place play with because of contact and expose the unfortunate event that stay cord strangled and take place; In addition, we all know, rope body quantity with around the scroll attitude the more, more easily produce and be entangled with peripheral things, with regard to commonly using structure, this exposes stay cord easily is entangled with the vane group generation and forms inconvenient person.

Edge this, main purpose of the present utility model is the shutter elevating mechanism that is to provide a kind of constant force balance, it can exempt the elevating mechanism of outer stay cord, and has safety and splendid property convenient for control.

Another purpose of the present utility model is the shutter elevating mechanism that is to provide a kind of constant force balance, and it can exempt the shutter elevating mechanism that exposes stay cord, and it has less rope body quantity and simplifies rope body spooling form, to form the optimum design of oversimplifying.

Edge is taken off purpose with on reaching, and the shutter elevating mechanism of a kind of constant force balance of the utility model has a vane group, a blade serving and a permanent moment of torsion rolling assembly; Wherein this vane group has most blades; This blade serving is the lowermost end person who links each blade of this vane group and pass this vane group; This perseverance moment of torsion rolling assembly is the top that installs this vane group, has a serving member and a permanent torsion spring unit, and this serving member is that volume is provided with this blade serving; This perseverance torsion spring unit is to combine as interlock with this serving member, and tool is provided with a permanent torsion spring, and this perseverance torsion spring has constant returning and releases elastic force, makes this perseverance torsion spring unit provide this serving member that constant backrush power person is arranged; Wherein release pre-power constant time of permanent torsion spring and must meet following condition:

W-Fs＜R＜W＋Fs

Wherein W is the overall weight of vane group;

Fs is system's stiction;

R is that returning of permanent torsion spring released elastic force;

Wherein this serving member has one first axle, and its two ends are arranged with rolling wheel, establishes this blade serving person in order to volume; Should perseverance torsion spring one end be to be fixedly arranged on this first axle wherein, the other end be free state person; The periphery of free end that wherein should the perseverance torsion spring utilizes the spacing position person that should the perseverance torsion spring of two catch; More be provided with a roller on this first axle, can hold the person of setting firmly for setting firmly of this perseverance torsion spring; Free end that wherein should the perseverance torsion spring is to be arranged with one second axle person; Wherein be arranged with a roller on this second axle, can be for the sheathed person of free end of this perseverance torsion spring; More be provided with a friction adjustment device, in order to the friction force value person of modulation whole system; Wherein this friction adjustment device is provided with two video discs, and this each video disc is to be sheathed on this first axle, and it is arranged with several protuberance and persons of being in contact with one another.

For being had for the purpose of this utility model, feature and effect, your juror further understands and approval, after enumerating following examples now and cooperating graphic being described in more detail in, wherein:

Fig. 1 is stereoscopic figure of the present utility model.

Fig. 2 is the 2-2 sectional view of Fig. 1, is the schematic diagram that shows this perseverance torsion spring unit.

Fig. 3 is the exploded perspective view of the utility model frictional force adjuster.

Fig. 4 is the schematic diagram of the permanent torsion spring unit of another preferred embodiment of the utility model.

At first seeing also shown in Figure 1ly, is the stereoscopic figure for the shutter elevating mechanism of the utility model constant force balance, is to have a framework 10, a vane group 20, a blade serving 30 and a permanent moment of torsion rolling assembly 40, wherein:

This framework 10 is the tops that are arranged in shutter, in order to be set up in person on the forms;

This vane group 20 has plurality of vanes 21, and its lowermost end is provided with a base plate (this vane group overall weight is with (W) expression);

This blade serving 30, have two serving 30A, 30B, this each serving 30A, 30B are that end volume is located on this perseverance moment of torsion rolling assembly 40 respectively, and the other end is to pass each blade 21 of this vane group 20 and be fixedly arranged on this base plate, forms twining of one-way fashion and establishes mode person;

This perseverance moment of torsion rolling assembly 40, be to be arranged in this frame portion 10, has a serving member 41, first and second axle of its tool 411A, 411B, wherein this first axle 411A two ends are arranged with rolling wheel 412A, 412B, establish this each serving 30A, 30B in order to volume, and this first axle 411A has rotating function, this second axle 411B is not then had a rotating function person with fixed form; One permanent torsion spring unit 44, as shown in Figure 2, at least have one group of two

corresponding roller

44A, 44B, be to be sheathed on respectively on this first and second axle 411A, the 411B, and volume is provided with a permanent torsion spring 45 between this two

roller

44A, 44B, should perseverance torsion spring 45 1 ends be to be fixedly arranged on this roller 44A wherein, and the other end then is on sheathed this roller 44B in addition in free state ground, make that these perseverance torsion spring 45 1 ends are fixed end, the other end is the storage end of free state; Because the setting of this perseverance torsion spring 45, mainly being all can provide constant elastic force under its any crimped position, therefore in the time of on being assemblied in this each

roller

44A, 44B, can store a constant pre-power person of backrush, provided this serving member 41 that a constant backrush power person is arranged, and release pre-power should perseverance torsion spring 45 constant time and must meet following condition, that is:

W (vane group weight)-Fs (system's stiction)＜R (constant time of permanent torsion spring release elastic force)＜W (vane group weight)+Fs (system's stiction)

Wherein (W (vane group weight)-Fs (the quiet power of rubbing of system)) for vane group because of gravity own, and desire to have the power of downward landing; And (W (vane group weight)+Fs (the quiet power of rubbing of system)) desires to have the power of upwards rolling for vane group is subjected to returning of permanent torsion spring to release pre-power; In other words, if the constant force of permanent torsion spring is returned and released pre-power and be under the above-mentioned condition, then the whole blade group will be in statically balanced condition, that is vane group keeps constant height; If need scroll up or pull down and fall vane group, only need to destroy this static balance and the strength bestowed up or down get final product with manpower, after the manpower releasing, this whole blade group involution balance person.

See also shown in Figure 3 again, formed under the Different Weight situation by have different blade quantities in response to the window height for the utility model, can set up a friction adjustment device, then release in the restrictive condition of pre-power constant time of permanent torsion spring 45, this system's stiction is able to modulation, and makes whole system be in the static balance; This friction adjustment device 50 is to have two

video discs

51,52, and this each video disc the 51, the 52nd is sheathed on this first axle 411A of this serving member 41, and it is arranged with several protuberances 511,521 and is in contact with one another, to produce a predetermined frictional resistance; By the combination of above-mentioned member, make that whole system can be according to different vane group weight and the quantity that suitably set up this friction adjustment device 50;

What must be illustrated is, the winding mode of blade serving 30 of the present utility model also can adopt the mode of establishing that twines of loop-type, but not be the winding mode of one-way fashion in the foregoing description, that is this blade serving 30 is can pass this vane group 20 downwards to base plate 22, after laterally passing these base plate 22 1 preset distances again, upwards pass this vane group 20 again to frame portion 10; In addition, as shown in Figure 4, be to be another preferred embodiment of the utility model, it is that these perseverance torsion spring 45 1 ends are fixedly arranged on the roller 44A of this first axle 411A, the other end utilizes the spacing position that should perseverance torsion spring 45 of two catch 46, make the storage end of this perseverance torsion spring 45 be free state person, that is should be sheathed on this second axle 411B by the also non-need of perseverance torsion spring 45, it only will have interlock effect person to get final product to having the first axle 411A that volume establishes this blade serving 30 installing to produce; Therefore bigger compatibility is arranged in design and installation; Therefore implement according to the described equivalence of claim such as, all should be considered as creation spirit person of the present utility model.

The utility model compared with prior art has:

1. exempt the elevating mechanism of outer stay cord, and have security and splendid property convenient for control.

2. have less rope body quantity and simplify rope body spooling form, to form the best of oversimplifying Design.

To sum up institute is old, and the utility model really can be reached above-mentioned effect, and confirms through sample, really Can reach the effect of our expection, its practicality is unquestionable, and its technological means does not see and commonly uses The person, and really can increase effect, having met novelty and progressive, the person does not file an application in accordance with the law in the whence.

Claims

1. A shutter lifting mechanism with constant force balance, which has a blade group, a blade winding rope and a constant torque winding assembly; it is characterized in that the blade group has a plurality of blades; the blade winding rope is connected Each blade of the blade group passes through the bottom end of the blade group; the constant torque winding assembly is provided on the top of the blade group, has a winding rope member and a constant torque spring unit, and the winding rope The member is wound with the blade winding rope; the constant torque spring unit is linked with the winding rope member and has a constant torque spring, and the constant torque spring is provided with a constant return elastic force, so that the constant torque spring The unit provides a constant rewinding force of the cord-reeling member;

Among them, the constant return preload of the constant torque spring must meet the following conditions:

W-Fs<R<W+Fs

Wherein W is the overall weight of blade group;

Fs is the system static friction;

R is the return elastic force of the constant torque spring.

2. The blind lifting mechanism with constant force balance according to claim 1, wherein the rope winding member has a first mandrel, two ends of which are respectively provided with rollers for winding the blade rope. .

3. The blind lifting mechanism with constant force balance according to claim 2, wherein one end of the constant torque spring is fixed on the first spindle, and the other end is in a free state.

4. The blind lifting mechanism with constant force balance according to claim 3, wherein the outer periphery of the free end of the constant torque spring uses two stoppers to limit the position of the constant torque spring.

5. The blind lifting mechanism with constant force balance according to claim 3, wherein a roller is further provided on the first spindle for fixing the fixed end of the constant torque spring.

6. The blind lifting mechanism with constant force balance according to claim 3, wherein the free end of the constant torque spring is sleeved with a second spindle.

7. The blind lifting mechanism with constant force balance according to claim 6, wherein a roller is sheathed on the second spindle for the free end of the constant torque spring to be sheathed on.

8. The blind lifting mechanism with constant force balance according to claim 1, further comprising a friction adjuster for adjusting the friction value of the entire system.

9. According to claim 8, the blind lifting mechanism with constant force balance, wherein the friction adjuster is provided with two discs, and each disc is sheathed on the first mandrel, and there are several discs respectively. protrusions and contacts with each other.