CN200991136Y

CN200991136Y - Electric curtain

Info

Publication number: CN200991136Y
Application number: CN 200620162152
Authority: CN
Inventors: 李岱峰; 李烨
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-12-18
Filing date: 2006-12-18
Publication date: 2007-12-19
Anticipated expiration: 2016-12-18

Abstract

No. CN200610044354.1 patent application provides an electric curtain which can use only one set of retarder and gearing device to drive a plurality of curtains to close and open independently, but existing a problem on when being applied to an arc guide rail, the guiding direction is not good, thereby the curtain is easily locked. Therefore, a plurality of main innovated measures are adopted based on the former patent application; a. a transmission belt is adopted, on the side wall inside guide rail groove, a T shape groove pipe type guide rail or a guide rail shaped like a Chinese character Wang is arranged; b. the positioning block is divided into left and right two blocks, every positioning block is connected with the bed frame of a tractor through a vertical axle pin, so as to enable the positioning block swinged horizontally, c. the axle center of a horizontal axle roller wheel is provided with a parallel plane, so that the axle of the horizontal axle roller wheel is fluctuate, d. the distribution of the guiding roller wheels is improved, e. the vertical axle roller wheel is arranged inside a frame pedestal, the a plurality of measures are applied solely or jointly, the performance of the guiding direction can be improved remarkably, so as to enable the utility model be used in a strait or an arc guide rail, and the manufacture is convenient, the technology of an injection molding and a die-casting can be adopted, thereby the cost can be reduced.

Description

Electrically driven curtain

Technical field:

The utility model is the improvement about electrically driven curtain.

Background technology:

The CN200610044354.1 patent application discloses a kind of electrically driven curtain, general configuration is: a kind of improved electrically driven curtain, has guide rail, Vidacare corp, coaster, erecting by overhang, coaster and erecting by overhang are retrained by guide rail, along guide rail movement, coaster is hung edge, curtain front, erecting by overhang is hung curtain, on the Vidacare corp drive transmission at least one not necessarily is subjected to guide rail constraint but along the movable part of guide rail movement, has tractor, tractor is retrained by guide rail, tractor and movable part fix, on coaster or the tractor removable pin is arranged, tractor is connected with coaster by removable pin, has trip gear, block compressing removable pin on the trip gear is threaded off tractor and coaster, there are locating piece and supratrochlear locating hole to cooperatively interact on the tractor, trip gear is made actuator with electromagnet, the collision block of projection is arranged on the tractor, and collision block pushes up the block on the trip gear to latched position, inserts block at this position electromagnet armature under spring action, stop block under action of reset spring, to reset, discharge the block on the trip gear behind the electromagnetic actuation.

Because locating piece and tractor on the tractor are relatively-stationary, only rely on the level of supratrochlear locating hole and locating piece to relatively rotate and to be used for the bigger guide rail of radius of turn, when being used for the less guide rail of radius, block easily, the axle of trunnion axis roller is a fixed axis, and guiding is bad when being used for arc-shaped guide rail.

The utility model content:

The purpose of this utility model is: aforementioned patent applications is improved, provide a kind of can be used for arc-shaped guide rail only drive the electrically driven curtain that several curtain independently open and close with cover decelerator and a transmission device, to there be guiding smooth and easy simultaneously, resistance is little, good integrity, simple in structure, manufacturing and easy for installation, the characteristics that control is little.

The problem that is used for arc-shaped guide rail for solution, several main corrective measures on the basis of aforementioned patent applications, have been taked, a, adopt the sidewall of driving-belt in the groove of guide rail to have tubular type guide rail or king's font guide rail of T type groove, b, about locating piece is divided into two, each locating piece is connected with the pedestal of tractor by vertical pivot pin or is connected on the tractor pedestal page or leaf sheet of hinge form, hinge page or leaf sheet connects by pivot pin, make the locating piece can horizontal hunting, C, for further improving guidance quality, there is parallel plane at the axle middle part of trunnion axis roller, make the axle of trunnion axis roller float d, improve the distribution of guide roller.

Electrically driven curtain after the improvement has guide rail, Vidacare corp, coaster, erecting by overhang, coaster and erecting by overhang are retrained by guide rail, along guide rail movement, coaster is hung edge, curtain front, erecting by overhang is hung curtain, on the Vidacare corp drive transmission at least one is along the movable part of guide rail movement, has tractor, tractor is retrained by guide rail, tractor and movable part fix, on coaster or the tractor removable pin is arranged, tractor is connected with coaster by removable pin, has trip gear, block compressing removable pin on the trip gear is threaded off tractor and coaster, there are locating piece and supratrochlear locating hole to cooperatively interact on the tractor, trip gear is made actuator with electromagnet, the collision block that projection is arranged on the tractor, collision block pushes up the block on the trip gear to latched position, under spring action, insert block at this position electromagnet armature, stop block under action of reset spring, to reset, discharge the block on the trip gear behind the electromagnetic actuation, points unlike the prior art are: adopt the sidewall of driving-belt in the groove of guide rail to have tubular type guide rail or king's font guide rail of T type groove, about locating piece is divided into two, each locating piece is connected with the pedestal of tractor by pivot pin or is connected on the tractor pedestal page or leaf sheet of hinge form, and hinge page or leaf sheet connects by pivot pin, makes the locating piece can horizontal hunting.

For further improving guidance quality, there is parallel plane at the axle middle part of trunnion axis roller, and the axle of trunnion axis roller is floated,

Improve the distribution of guide roller, three groups of large diameter guide rollers are arranged on the tractor pedestal, distribution has the trunnion axis roller in the middle of being, there is the vertical axis roller both sides, the vertical axis roller is in the bearing of shaped as frame, the trunnion axis roller that minor diameter is arranged on ball or the close vertical plane of coaster one side is arranged on the horizontal plane of shaped as frame bearing, in the groove or hole of two locating pieces on pedestal, be connected with the pedestal of tractor by vertical pivot pin.

Supratrochlear vertical axes roller is in the shaped as frame bearing, and there is major diameter trunnion axis roller the front portion of shaped as frame bearing, and there is minor diameter trunnion axis roller at the rear portion, and removable pin is the gib head ratchet form of curved arm lever shape, and head leans out outside the coaster pedestal, and axle is vertical with horizontal plane.

The pedestal of tractor is that the metallic plate stamping parts welding more than two is made, wherein one is the dihedral plate, another piece is dark trough plate, the interior edged surface of dihedral plate gets up with the external groove sidevall applying spot welding of dark trough plate, the outer bottom of dark trough plate and the inner bottom surface of dihedral plate be the grooving shape from a distance, locating piece is in groove, and the shaped as frame bearing of vertical axes roller is welded on the dihedral plate and dark trough plate that applying spot welding gets up.

Guide rail is the square tube type guide rail, and there is the outside T type groove of opening the side of guide rail, and flat driving-belt is in T type groove, and there is driving-belt end fixed head the end of driving-belt, and driving-belt end fixed head is hinged on the tractor.

Have extension plate on the coaster, extension plate is connected by axle with coaster, can relatively rotate.

Except that the driving-belt fixed head, the pedestal that has the tractor of shaped as frame bearing is that injection moulding, die casting or casting method are integrally formed, and the driving-belt fixed head is screwed on the integrally formed tractor pedestal in addition.

Tractor is made up of two parts, is connected by hinge each other, and locating piece is screwed or pivot pin is connected on the tractor pedestal of lamellar formula of hinge, and there is the vertical axes roller centre, and hinge is coaxial with roller, and each page sheet all has collision block.

The utility model effect:

Aforementioned several measures separately or unite use and can significantly improve performance, can be used for guide rail straight or arc, even can be used to have the guide rail of the arc of positive and negative both direction, realized the utility model purpose.

Description of drawings:

Fig. 1 be by the utility model design can with the matching used stereogram of tubular type guide rail straight or arc with tractor of welding pedestal,

Fig. 2 is the stereogram with the coaster example that welds pedestal that can cooperate with arc-shaped guide rail,

Fig. 3 be the coaster that cooperates with arc-shaped guide rail, tractor, trip gear together the time along the horizontal center line below of removable pin the cutaway view after 2 millimeters horizontal plane dissects

Fig. 4 is the stereogram that the trunnion axis roller set of floating axle is arranged,

Fig. 5, Fig. 6 Fig. 7 are the cross-sectional views that 3 kinds of sides have the guide rail of T-slot,

Fig. 8 is the cross-sectional view of " king " font guide rail

Fig. 9 is the tractor that is combined together with king's font guide rail and the stereogram of coaster,

Figure 10 be by the utility model design can be with the matching used hinged tractor of tubular type guide rail straight or arc and combination of pulley stereogram together the time,

Figure 11 has the tractor of an injection moulding pedestal and coaster stereogram together the time,

Figure 12 is the stereogram of the tractor pedestal of injection moulding or die casting,

Figure 13 is the stereogram of the coaster pedestal of injection moulding or die casting.

100. trough plate, 101. apertures, 102. flat boards, 103. troffers, 104 removable pins, 105. springs, 106 extension plates, 107. suspension hooks, 108., 109. trunnion axis rollers, 110. vertical axis rollers, 111. shaped as frame bearings, 112 balls, 113. sulculuses,

301. right locating piece, 302. holes that supply the rotary type removable pin to hook, 303. rollers, 304. collision blocks, 305. cover plate, 306. trunnion axis rollers, 307 dihedral plates, 308. left locating piece, 309. vertical axis rollers, 310. end fixed heads, 311. hinge, 312. raised plate, 313 screw rods, 314, the plate of projection, 315. dark trough plates, 316. the shaped as frame bearing, 317. balls, 318. magnet.

The specific embodiment:

Followingly the utility model is elaborated with reference to accompanying drawing and example,

Guide rail preferably adopts the side that the outside tubular guide rail of opening of T-slot and T-slot is arranged, and also can adopt two sides that the inside tubular guide rail of opening of T-slot and T-slot is arranged, and Fig. 5 to Fig. 7 is the cross-sectional view that 3 kinds of sides have the guide rail of T-slot.

Driving-belt has the flat-belt of perforation in the middle of adopting, also can adopt synchronous cog belt or steel wire rope.

The supporting base of tractor or the coaster vertical axes roller in the tubular guide rail pipe is preferably rectangular box-like, the roller of vertical axes is in rectangle frame, having the tractor pedestal of rectangle frame or coaster pedestal can integral molded plastic, casting or die casting go out, also can be welded into, the shaped as frame bearing of welding can be welded on the pedestal by the stamping parts of groove shape and form, the bottom surface of shaped as frame bearing is to form the limit that folds on the plate of pedestal to form, also can on the pedestal groove be arranged, there is flanging on the both sides of groove, and rectangle frame and flanging spot welding form.

There is the end fixed head end of driving-belt, the end fixed head that has the flat-belt of perforation to be used with the centre is the structure that is raised with tooth on substrate, substrate can be the spring sheet, also can be several chain sheets that pin connects of saving, the projection tooth can with the substrate one, also can inlay fixedly, on the tooth of projection back draught is arranged, the microcephaly is towards substrate, screw or double-screw bolt are arranged above, be fixed on the substrate with screw or nut, several perforations of the end of driving-belt are trimmed to the shape that cooperates with the tooth of projection, rely on the back draught of raised tooth that driving-belt is pressed onto on the substrate, and the end fixed head can directly be fixed on the driving-belt fixed head, also can be hinged on the driving-belt fixed head, as shown in Figure 11.

Fig. 1 be by the utility model design can with the matching used stereogram of tubular type guide rail straight or arc with tractor of welding pedestal, referring to Fig. 1, tractor left-right symmetry structure, the driving-belt fixed head is arranged when driving-belt is outside pipe, the tractor pedestal is welded to form by two above metallic stamping pieces, wherein a plate 315 is deep trouth shape, two walls of groove are respectively in the pipe of tubular guide rail and outside the pipe, wall outside the pipe is as the driving-belt fixed head, another piece plate collision block fixed head 307 is dihedral plates, the interior edged surface of dihedral plate 307 stretches into the interior wall applying spot welding of pipe with dark trough plate 315, the outer bottom of dark trough plate and the inner bottom surface of dihedral plate be the grooving shape from a distance, locating piece 301 and 308 is in groove, locating piece is the thin-wall part that plastics are made, with the outer contour of locating hole mating part be rectangle, locating piece respectively stretches out the tractor pedestal from the two sides, the length of stretching out and the same length of coaster, locating piece is divided into 301 two of left locating piece 308 and right locating pieces, each locating piece is connected with the pedestal of tractor by pivot pin, pivot pin passes two arms up and down of groove, make the locating piece can horizontal hunting, as shown in Figure 3.The strip collision block 304 of rectangle is fixed on the face opposite with locating piece of the bottom of vertical plane of collision block fixed head 307, collision block 304 is the forms at the two upper corners installing roller 303 of troffer, notch has cover plate 305, the hole 302 of hooking for the rotary type removable pin is arranged on the vertical plane of dihedral plate 307, two groups of major diameter vertical axes rollers 309 are arranged before and after the tractor, there is one group of major diameter trunnion axis roller 306 that can level floats as shown in Figure 4 the centre, two rollers of trunnion axis roller are symmetrically distributed in the both sides of the plate that pedestal is bonded, the middle part overstriking of axle, parallel plane is arranged up and down, the hole that cooperates is with it arranged on the pedestal, the both sides up and down or the periphery in hole have little chimb, the vertical axes roller is in shaped as frame bearing 316, the shaped as frame bearing is welded on the pedestal by the stamping parts of groove shape and forms, and the bottom surface of shaped as frame bearing 316 is to form the limit that folds on the plate of pedestal to form.The top edge of each shaped as frame bearing has two holes, be used to hold ball 317, the bearing of ball can be as shown in FIG. on the projection that the otch flanging forms, also can as shown in Figure 2 the knuckle place be extruded groove shape projection, the bearing of ball is on groove shape projection, can also not establish ball as shown in Figure 12, on the vertical plane of shaped as frame bearing, be protruding with the bearing of tubular body in addition as minor diameter trunnion axis roller, end fixed head 310 is the structures that are fixed with tooth on the spring leaf with nut, is connected on the driving-belt fixed head with hinge 311.Be fixed with lug boss 312 on one of them end fixed head, end fixed head and lug boss are clamped the driving-belt fixed head of tractor outside pipe, screw rod 313 passes projection, and the plate of projection is arranged on the driving-belt fixed head, and screw rod 313 is blocked by the plate of projection can not axial float.

It is the integrally formed method of injection moulding, die casting or casting method that last example can adopt the pedestal of the tractor except that the driving-belt fixed head, the driving-belt fixed head that tabular has flange is screwed on the integrally formed tractor pedestal in addition, as shown in Figure 11, Figure 12 is the stereogram of the tractor pedestal of injection moulding or die casting.

Definition: the diameter of roller and the width of guide rail or be called " major diameter roller " when highly roughly the same, the diameter of roller only for the width of guide rail or highly half or be called " minor diameter roller " when following.

When adopting both sides to have the guide rail of the inside T-slot of opening and driving-belt in pipe, the tractor pedestal needn't be established the driving-belt fixed head outside pipe, aforementioned dark trough plate can use the dihedral plate contour with it to replace, adopt following structure that the end fixed head is fixed with tractor: to have tooth to cooperate on the fixed head of end with perforation on the driving-belt, be raised with central dividing plate on the fixed head of end, central dividing plate inserts the centre of rectangle frame, roller shaft inserts central dividing plate, there is projection centre at two vertical edges of rectangle frame, cooperates with the groove of central dividing plate both sides.

Figure 10 is the stereogram together time the with the matching used hinged tractor of tubular type guide rail straight or arc and combination of pulley by the utility model design.Tractor is made up of two parts, connect by hinge each other, two locating pieces are screwed respectively or pivot pin is connected on the page or leaf sheet of hinge separately, there is major diameter vertical axes roller the centre, hinge is coaxial with the vertical axes roller, each page sheet all has collision block, but be connected with the cover plate of the flexibility of hinged or bending between two collision blocks, trunnion axis roller and vertical axes roller are arranged on each of tractor page sheet simultaneously, the trunnion axis roller is the major diameter roller of floating axle, near coaster the roller here is minor diameter vertical axes roller, the two-part pedestal of tractor can be made with injection moulding or pressure casting method, the driving-belt fixed head has the shallow box-like of flange around being, be fixed on the pedestal with bolt or screw, the roller of coaster front portion is a minor diameter trunnion axis roller, minor diameter roller when tractor combines with coaster is overlapping up and down, supratrochlear vertical axes roller is in the shaped as frame bearing, there is minor diameter trunnion axis roller front and back, two end fixed heads are fixed on the driving-belt fixed head by hinge respectively, be fixed with lug boss on one of them end fixed head, end fixed head and lug boss are clamped the driving-belt fixed head of tractor outside pipe, screw passes projection, on the driving-belt fixed head flange is arranged, screw is blocked by the flange of projection can not axial float.

Fig. 2 is the stereogram with coaster example of the band vertical axis rotary type removable pin that welds pedestal, referring to Fig. 2, the part of coaster pedestal in tubular guide rail is that the face-to-face superimposed spot welding of metallic plate forms, superimposed part is by the groove of tubular guide rail bottom surface, the superimposed face-to-face part of metallic plate outside pipe surrounds the rectangular opening that cooperates with locating piece, there is horn mouth at the front opening place in hole, the coaster pedestal is made up of two metallic plates in this example, preferably one flat plate 102 is formed with the trough plate 100 that cell wall has flanging, the guide frame of coaster is: supratrochlear vertical axes roller 110 is in shaped as frame bearing 111, the shaped as frame bearing is welded on the pedestal by the stamping parts of groove shape and forms, the bottom surface of shaped as frame bearing is to form the limit that folds on the plate of pedestal to form, there is the major diameter trunnion axis roller 109 of aforementioned floating axle the front portion of shaped as frame bearing, there are minor diameter trunnion axis roller or ball 112 in the rear portion, head is that the bearing of vertical axes rotary type removable pin 104 of gib head ratchet form is on the hole wall of the rectangular opening that cooperates with locating piece, form in dull and stereotyped 102 upper cut bendings, be welded with troffer 103 in addition, the axle 108 of rotary type removable pin passes two walls of troffer, rotary type removable pin 104 is in groove, torsion spring 105 is enclosed within on the axle 108 of rotary type removable pin between the bearing of troffer and dull and stereotyped 102 upper cut bendings formation.It is external that the head of the rotary type removable pin of gib head form leans out the basis of coaster pedestal, can hook tractor pedestal or collision block.Extension plate 106 usefulness of angle bar shape axle be fixed on the rectangular opening that cooperates with locating piece below, can horizontal hunting, have back-moving spring to make the extension plate answer home position parallel with locating hole.The effect of extension plate is to have certain staggered superimposedly when two curtain are crossed in the centre, and suspension hook 107 is arranged on the extension plate.The approaching one side of coaster and erecting by overhang is that the back of coaster pedestal has anterior extended projection, projection is extended in the back of two boards in this example, there is aperture 101 the contour position in the bottom of projection and the hole on the erecting by overhang, indentation number millimeter under the hole, the material that does not have the coaster body has the space that holds chain link or rope, and some form sulculuses 113 near the outside separately belling of the material the hole, chain link or rope are installed with split pin in the aperture 101 in groove.

It is integrally formed methods such as injection moulding, die casting or casting that above-mentioned coaster example can adopt pedestal, and Figure 13 is the stereogram of the coaster pedestal of injection moulding or die casting, and Shooting Technique can reduce cost.

Fig. 9 is installed in the tractor on king's font guide rail and the stereogram of coaster, and king's font guide rail as shown in Figure 8.The tractor pedestal is by dark channel and shallow channel is nestable forms, shallow channel point is welded in the deep trouth shape part and becomes dividing plate, become rectangular opening between two bottom lands, the rectangle locating piece is in the hole, the troffer of collision block is at the opposite side of hole wall, two walls up and down and rectangle locating piece that vertical axes is passed rectangular opening are connected to the rectangle locating piece on the tractor pedestal, the rectangle locating piece can be swung, two walls of dark channel have outside flange, up and down two horizontal clamp of two vertical axes rollers with " king " word are respectively arranged on two walls of dark channel up and down, be fixed with the lengthening guide plate on one wall of dark channel, the lengthening guide plate is latch plate preferably, the two ends of lengthening guide plate respectively have a pair of vertical axes roller and " king " word on, in the end face contact of two horizontal strokes, respectively there is a trunnion axis roller at two ends on " king " word, in between two horizontal strokes, the flat-belt that there is a perforation centre over there on, in between two horizontal strokes, have tooth to cooperate with perforation on the flat-belt on the fixed head of end, the end fixed head fixes on the cell wall of dark channel with screw or hinges fixing.

The coaster pedestal and the tractor pedestal that cooperate with king's font guide rail are similar, the coaster pedestal is also by dark channel with shallow channel is nestable forms, shallow channel point is welded in the deep trouth shape part and becomes dividing plate, become the rectangle locating hole between two bottom lands, there is horn mouth in the aperture, have in trunnion axis roller and plastic cage and " king " word on two walls of dark channel, descend the guide rail of two horizontal compositions to cooperate, the bottom surface of shallow channel has pipe crimping on one side, pivot pin is arranged in the pipe, there is narrow groove at the middle part of pipe crimping, and the chain link that connects erecting by overhang is in groove.The structure that removable pin is installed on the hole wall of rectangle location is identical with the aforementioned coaster that cooperates with tubular guide, and preferably adopting head is the vertical axes rotation removable pin of gib head ratchet form.

Claims

1, a kind of improved electrically driven curtain, has guide rail, Vidacare corp, coaster, erecting by overhang, coaster and erecting by overhang are retrained by guide rail, along guide rail movement, coaster is hung edge, curtain front, erecting by overhang is hung curtain, on the Vidacare corp drive transmission at least one is along the movable part of guide rail movement, has tractor, tractor is retrained by guide rail, tractor and movable part fix, removable pin is arranged on the coaster, tractor is connected with coaster by removable pin, has trip gear, the block that can stretch out or withdraw compressing removable pin on the trip gear is threaded off tractor and coaster, there are locating piece and supratrochlear locating hole to cooperatively interact on the tractor, trip gear is made actuator with electromagnet, the collision block that projection is arranged on the tractor, collision block pushes up the block on the trip gear to latched position, under spring action, insert block at this position electromagnet armature, stop block under action of reset spring, to reset, discharge the block on the trip gear behind the electromagnetic actuation, it is characterized in that: in the groove of driving-belt on guide rail, about locating piece is divided into two, each locating piece is connected with the pedestal of tractor by pivot pin or is fixed on the tractor pedestal page or leaf sheet of hinge form, hinge page or leaf sheet connects by pivot pin, makes the locating piece can horizontal hunting.

2, electrically driven curtain according to claim 1 is characterized in that: the axle of tractor or supratrochlear trunnion axis roller floats, and there is parallel plane at the axle middle part of trunnion axis roller.

3, electrically driven curtain according to claim 2, it is characterized in that: three groups of large diameter guide rollers are arranged on the tractor pedestal, distribution has the trunnion axis roller in the middle of being, there is the vertical axis roller both sides, the vertical axis roller is in the bearing of shaped as frame, the trunnion axis roller that minor diameter is arranged on ball or the close vertical plane of coaster one side is arranged on the horizontal plane of shaped as frame bearing, in the groove or hole of two locating pieces on pedestal, be connected with the pedestal of tractor by pivot pin.

4, according to claim 1 or 2 or 3 described electrically driven curtains, it is characterized in that: supratrochlear vertical axes roller is in the shaped as frame bearing, there is major diameter trunnion axis roller the front portion of shaped as frame bearing, the trunnion axis roller that minor diameter is arranged on the vertical plane of ball or back is arranged on the horizontal plane of shaped as frame bearing, removable pin is the gib head ratchet form of curved arm lever shape, the position is in the hole wall outside of the rectangle locating hole that matches with locating piece, and its head leans out outside the coaster pedestal, and axle is vertical with horizontal plane.

5, according to claim 1 or 3 described electrically driven curtains, it is characterized in that: guide rail is the square tube type guide rail, and there is the outside T type groove of opening the side of guide rail, and flat driving-belt is in T type groove, and there is driving-belt end fixed head the end of driving-belt.

6, electrically driven curtain according to claim 1 is characterized in that: have extension plate on the coaster, extension plate is connected by axle with coaster, can relatively rotate, and driving-belt end fixed head is hinged on the driving-belt fixed head.

7, according to claim 1 or 3 described electrically driven curtains, it is characterized in that: the pedestal of tractor is that the metallic plate stamping parts welding more than two is made, wherein one is the dihedral plate, another piece is dark trough plate, the interior edged surface of dihedral plate gets up with the external groove sidevall applying spot welding of dark trough plate, the outer bottom of dark trough plate and the inner bottom surface of dihedral plate be the grooving shape from a distance, and locating piece is welded with the shaped as frame bearing on the tractor pedestal in groove.

8, according to claim 1 or 3 described electrically driven curtains, it is characterized in that: except that the driving-belt fixed head, the pedestal that has the tractor of shaped as frame bearing is that injection moulding, die casting or casting method are integrally formed, and the driving-belt fixed head is fixed on the integrally formed tractor pedestal in addition.

9, electrically driven curtain according to claim 1 and 2, it is characterized in that: tractor is made up of two parts, connect by hinge each other, locating piece is screwed or pivot pin is connected on the tractor pedestal of hinge lamellar formula, there is the vertical axes roller centre, hinge is coaxial with roller, and each page sheet all has collision block.

10, electrically driven curtain according to claim 1, it is characterized in that: guide rail is the guide rail of " king " font section, the tractor pedestal is by dark channel and shallow channel is nestable forms, shallow channel is fixed in the dark channel becomes dividing plate, become rectangular opening between two bottom lands, the rectangle locating piece is in the hole, the troffer of collision block is at the opposite side of hole wall, two walls up and down and rectangle locating piece that vertical axes is passed rectangular opening are connected to the rectangle locating piece on the tractor pedestal, the rectangle locating piece can be swung, the vertical axes roller is with two horizontal the clamping up and down of " king " word about respectively having on two walls of dark channel, be fixed with the lengthening guide plate on one wall of dark channel, the two ends of lengthening guide plate respectively have a pair of vertical axes roller and " king " word on, in the end face contact of two horizontal strokes, respectively there is a trunnion axis roller at two ends on " king " word, in between two horizontal strokes, the flat-belt that there is a perforation centre over there on, in between two horizontal strokes, there is tooth to cooperate on the fixed head of end with perforation on the flat-belt, the end fixed head fixes on the cell wall of dark channel with screw or hinges fixing, the coaster pedestal is also by dark channel with shallow channel is nestable forms, shallow channel becomes dividing plate in dark channel, become the rectangle locating hole between two bottom lands, there is horn mouth in the aperture, the bottom surface of shallow channel has pipe crimping on one side, pivot pin is arranged in the pipe, there is narrow groove at the middle part of pipe crimping, the chain link that connects erecting by overhang is in groove, removable pin is that the vertical axes of gib head ratchet form is rotated removable pin, is installed in the outside of rectangle location hole wall.