CN2595281Y

CN2595281Y - Stay cord type window curtain rotary device

Info

Publication number: CN2595281Y
Application number: CN 02282930
Authority: CN
Inventors: 刘泰平
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-10-25
Filing date: 2002-10-25
Publication date: 2003-12-31
Anticipated expiration: 2012-10-25

Abstract

The utility model relates to an improved rotator of a stay cord type window curtain, which comprises a driving gear arranged on a shaft rod of the rotator to drive a driven gear which is arranged in the rotator, and a worm rod which is coaxially arranged on the other end of the driven gear to drive a helical gear which is penetrated and arranged on a driving rod, wherein, the shaft rod of the rotator is penetrated and arranged in a shaft center of a rotary wheel, and a through hole and a notch are respectively formed from a spoke board of the rotary wheel and the circumference of both sides of the rotary wheel for the middle section of a pull rope to penetrate through the through hole. Both ends of the pull rope are clamped in the notch and reversely wound on the rotary wheel, the two free ends of the pull rope are separately penetrated through a rope penetrating hole of a base seat below the rotary wheel, so the pull rope is pulled to drive the driving rod to rotate through the transmission of four gear sets so as to control the angle alteration of vanes of a window curtain. A user can pull a window curtain through a light load, and the pull rope is limited by the rope penetrating hole and is not easily disengaged in the pulling process.

Description

Dragline type curtain circulator

(1) technical field

The utility model relates to a kind of curtain circulator that is used to change the curtain blade angle, relates to a kind of dragline type curtain circulator specifically.

(2) background technology

Be generally and prevent that the sunlight direct projection is indoor, or for increasing indoor disguise, or for increasing the consideration of indoor aesthetic property etc., big city is provided with curtain on window, and in the curtain by a kind of sun blind of forming by several blades, the blade of such sun blind is except being spurred up and down, open up outside the action of closing to produce, also can be via the pulling of a stay cord or the rotation of bull stick, allow each blade rotation and produce the angle variation, so that allow the blade rotation different angles change the shading and the printing opacity degree of sun blind, with the indoor brightness of in good time adjustment, and the sun blind of generally commonly using mainly are that a stay cord or bull stick are arranged on the circulator, and the drive link that is arranged on the track body by the circulator transmission rotates, the variation that allows each blade thereupon produce angle by the rotation of drive link again is to adjust indoor brightness.

The dragline type circulator structure of generally commonly using sun blind can be referring to as shown in Figure 7, it mainly is that the drive link 73 that utilizes the stay cord 81 that vertically spurs to circulation to drive on track body rotates, and the circulator structure of commonly using, it mainly is made up of a housing 74 and lid 72, lid 72 and housing 74 mainly are to utilize to be convexly set in colluding of the end sheet 722 of pulling and to collude the inboard of pulling in track body, in lid 72 and housing 74, be provided with a worm screw 76 again, and the formed snail flank 762 of these worm screw 76 1 ends is meshed with a helical gear 78, and can allow helical gear 78 rotate by the transmission of worm screw 76 snail flanks 762, rotate to drive helical gear 78 coaxial transmission axis hole 782 set drive links; End in addition in worm screw 76 is provided with a runner 80 again, be equipped with the stay cord 81 of a pulling capable of circulation in runner 80, can utilize 80 rotations of stay cord 81 pulling runners, and drive 78 rotations of worm screw 76 and helical gear thereupon, make each blade of shutter be able to the variation of generation angle by drive link 73 rotations, adjusting indoor brightness, yet the circulator of commonly using is in structure and use the real following every disappearance that has:

The circulator that this kind commonly used mainly is directly to utilize worm screw 76 to come 78 rotations of transmission helical gear and drive drive link to rotate, drive each blade rotation by drive link again, yet this kind is with two drive mechanisms that gear was constituted, the user need spend the bigger application of force, the pulling stay cord is to drive blade rotation smoothly, especially the texture that has artificial increase sun blind to be provided with, make blade with wooden material, and the overall weight of the wooden blade of this kind is quite heavy, more be difficult for making blade rotation with this circulator drive mechanism of commonly using, cause inconvenience and puzzlement in the use easily.

Stay cord is when pulling runner 80, any because of there is no around the runner 80 for preventing that stay cord breaks away from the structure of runner 80, therefore stay cord is when pulling runner 80, the situation that stay cord breaks away from runner 80 takes place easily, and make stay cord closely on the winding runner 80, be formed with the phenomenon that slightly gets loose, so not only can hinder the smoothness of stay cord pulling, easier tension force difference because of the both sides stay cord, and have a side to be elongated and opposite side is more drawn shorter situation to produce, thereby can cause sun blind inconvenience greatly in pulling, when this moment, the user can't spur smoothly if stay cord one side is short to the top, then need whole curtain is taken off adjustment, more can increase many meaningless puzzlements and inconvenience.

If stay cord is because of turn or wind blows, and when making stay cord tangled, when still spurring stay cord if the user does not know, allows the stay cord clip easily in runner after then, so just needs whole curtain is taken off adjustment, and increases the many troubles of user.

(3) utility model content

In order to improve above-mentioned disappearance, main purpose of the present utility model is to provide a kind of laborsaving, dragline type curtain circulator of preventing that stay cord from getting loose and stay cord both sides length being consistent.

Based on above-mentioned purpose, major technique means of the present utility model are for providing a kind of improved dragline type curtain circulator, mainly fasten and form by a housing and lid, be formed with one respectively in an end of housing and lid and can supply the clip combination slot of clip on rail bracket, in circulator, be provided with a helical gear that can be sheathed on the drive link, and in circulator, be provided with a worm screw that is meshed with helical gear in addition, being provided with one in an end of circulator can be for the runner of winding stay cord, runner central authorities then are provided with an axostylus axostyle that stretches into housing and lid portion inside, differ from the intermeshing end of helical gear in worm screw and to be provided with a driven gear, and be provided with a travelling gear that is meshed with driven gear in the end that the axostylus axostyle of runner stretches into housing and lid portion inside, on the disc of runner, run through and be provided with a perforation that can supply stay cord to place, be provided with the short slot that places blocking for stay cord in this place of the contiguous perforation of runner periphery in addition, be provided with a base in the bottom of circulator and runner in addition, contiguous this end of runner of this base is provided with the lacing hole that passes for stay cord.

Implement above-mentioned technological means of the present utility model and can obtain following advantage:

1. by the transmission of four gears, can suitably reduce the application of force of the required pulling stay cord of user, reduce user's burden.

Again the utility model respectively be formed with in the both sides of runner periphery can be for the short slot of stay cord break-through, and be equipped with a perforation that can place for the stay cord stage casing in the central authorities of runner, so when a wherein end of stay cord is untied the winding state, the other end then is rolled, causing stay cord is to control repeatedly in certain-length, can avoid stay cord only moving like this, and cause the uneven phenomenon of stay cord both sides length to a layback.

3. because the two ends of stay cord are two lacing holes that pass respectively on the base, so when even if stay cord twines mutually because of turn or wind blows, its upper end still keeps released state, to reduce the probability of curtain maintenance.

Further specify the purpose of this utility model, design feature and advantage below in conjunction with accompanying drawing.

(4) description of drawings

Fig. 1 is a perspective exploded view of the present utility model.

Fig. 2 is a three-dimensional appearance combination schematic diagram of the present utility model.

Fig. 3 is the enlarged diagram of the utility model runner.

Fig. 4 is a combination generalized section in plane of the present utility model.

Fig. 5 is the three-dimensional appearance schematic diagram of second kind of base kenel of the utility model.

Fig. 6 is the three-dimensional appearance schematic diagram of the third base kenel of the utility model.

Fig. 7 is the perspective exploded view of the dragline type circulator structure of general existing sun blind.

(5) specific embodiment

Please referring to Fig. 1, shown in 2, it is perspective exploded view of the present utility model and stereo appearance figure, by seeing among the figure, circulator 10 of the present utility model is made up of a housing 12 and lid 14, end in housing 12 and lid 14 extends toward the bending of outside level to lower recess simultaneously again, form a clip combination slot 122,142, use circulator 10 clips are fixed in (as shown in Figure 4) on the rail bracket 40, form clip combination slot 122 in housing 12 and lid 13 again, each is equipped with a combination perforation 124 relatively 142 these bottom portions, 144, be provided with a helical gear 18 in

housing

12 and 14 of lids in addition, and this helical gear 18 is to be set in a vertical break-through to cross on the drive link of 14 of housing 12 and lids, and this helical gear 18 and one is placed in

housing

12 and 14 of lids and is meshing with each other with worm screw 16 that helical gear 18 is vertical setting, even helical gear 18 is subjected to worm screw 16 transmissions and rotates.

Please cooperate simultaneously again referring to Fig. 4, differ from helical gear 18 these ends in worm screw 16 and be provided with a driven gear 162, and be provided with a travelling gear 222 in axostylus axostyle 22 1 ends that runner 20 stretches into housing 12 and lid 14, and driven gear 162 is meshed with travelling gear 222, make driven gear 162 be subjected to travelling gear 222 transmissions and rotate, and, make the drive link on the helical gear 18 must drive louver lamina rotation change angle by 18 rotations of worm screw 16 drive helical gears.

When the user spurs the stay cord 30 that is set around on the runner 20, then can drive blade rotation by the drive mechanism of forming by travelling gear 222, driven gear 162, worm screw 16 and 18 4 gears of helical gear and change angle, so just, can suitably reduce the user and spur the required load that overcomes of blade rotation, to alleviate the burden that the user spurs stay cord, especially wooden blade more can highlight its labour-saving effect, reaches the effect that improves the circulator effective utilization.

Again please referring to Fig. 1, shown in 2, respectively be formed with short slot 202 one in the both sides of runner 20 periphery, other contiguous short slot 202 positions on the disc of runner 20 are provided with the perforation 204 of perforation both sides, can for stay cord 30 with free end pass the perforation 204 after, pass short slot 202 again and be wound on the runner, be provided with a base 24 again in the bottom of runner 20, one side of this base 24 is formed with the two combination ears 248 that are provided with separately, be equipped with relatively on the two combination ears 248 and can bore a hole 124 with the combination of housing 12 and lid 14,144 relative combination perforation 249, like this can be with housing 12, the combination perforation 124 of lid 14 and combination ear 24,144,249 align the back inserts a latch 26, makes housing 12, lid 14 and base 24 are able to mutual combination.

Again in the end of base 24 with respect to runner 20, each is formed with both side edges 242 towards extending upward of runner 20 on every side in its both sides, on 242 of both side edges, base 24, then be equipped with all right one way or the other lacing hole 246 that supplies stay cord 30 two ends to run through, like this after base 24 and housing 12 and lid 14 are made up mutually, can allow runner 20 be placed in 242 of both side edges, utilize both side edges 242 to coat runner 20, available to prevent that stay cord 30 breaks away from runner 20.In addition, stage casing and contiguous combination ear 248 in base 24 should be held end face, corresponding to the root edge shape of housing 12 with lid 14, establish respectively and shore seat 243,244, in shoring seat 243,244 end faces and forming arc, using conflicts is supported in housing 12, lid 14 root edges, makes whole group circulator 10 have preferable steadiness.

Please consult Fig. 1 again, 2 and cooperate shown in Figure 3, stay cord 30 of the present utility model is worn around mode, be that a wherein end with stay cord 30 passes the perforation 204 that is positioned on the disc, and make stay cord 30 stage casings be positioned at perforation 204 approximately, penetrate the periphery of runner 20 more respectively by short slot 202 with the two ends of stay cord 30, and slightly be arranged on the short slot 202, then oppositely be set around runner 20 peripheries, circumference design according to runner 20, as long as both sides, stay cord 30 stage casing are oppositely twined four circles respectively, a wherein end that pulls and supports stay cord 30 when desire is adjusted the angle of curtain blade downwards and runner 20 is rotated, and then drive rotating shaft rotation gets final product, it is the longest, and to pull and support stroke be that the short slot 202 of runner 20 just is positioned at the below, and be released fully by stay cord 30 this ends of being pulled and supported and be not (being that runner 30 rotates four circles) till the rolled, at this moment, stay cord 30 another sections then are rolled because oppositely twine, otherwise, when desiring to adjust the angle of curtain blade once again, then need to pull and support stay cord 30 and twined this section, be rolled and originally discharged unwound stay cord 30 other ends this moment, such design can avoid stay cord 30 moving and cause the uneven phenomenon of stay cord 30 both sides length to a layback, allow stay cord 30 remain in good user mode, to improve convenience and the usefulness that circulator 10 uses.

From the above, the utility model mainly is that the drive mechanism that is constituted with travelling gear 222, driven gear 162, worm screw 16 and helical gear 18 in circulator 10 comes the rotation of transmission drive link, can suitably reduce the application of force of the required pulling stay cord of user like this, to reduce user's burden;

Stay cord 30 of the present utility model again is the perforation 204 that are placed through runner 20 by the stage casing, two ends oppositely are wound in runner 20 outboard peripheries again, so untie the winding state when a wherein end that spurs stay cord 30, the other end then is rolled, causing stay cord 30 is to control repeatedly in certain-length, can avoid stay cord 30 only moving to a layback like this, and cause the uneven phenomenon of stay cord 30 both sides length, allow stay cord 30 remain in good user mode, to improve convenience and the usefulness that circulator 10 uses.

Again because of stay cord 30 is two lacing holes 246 that pass respectively on the base 24, so when even if stay cord 30 twines mutually because of turn or wind blows, its upper end still keeps separated position, and can operate smoothly, to reduce the probability of curtain maintenance.

In addition, in the middle of aforementioned preferred embodiment, be that base 24 with circulator 10 is provided with the lateral margin 242 that is coated on runner 20 all sides, the lacing hole 246 that supplies stay cord 30 to place, and support and housing 12 and lid 14 bottoms shore seat 243,244, it can also only establish the lacing hole 246 that passes for stay cord 30 as illustrated in fig. 5 on base 24 ', and be positioned at the upwardly extending supporting seat 243 in base 24 ' stage casing, base 24 ' contiguous combination ear 248 these end end faces then are equipped with one and can be supported the flat board 245 that reaches housing 12 and lid 14 bottoms, though do not establish in the middle of the present embodiment to be coated on the lateral margin of runner 20 all sides, but because stay cord 30 mainly is restriction and the guiding that is subjected to lacing hole 246, so also be unlikely to break away from.

" kenel; it is in base 24 " is provided with two lacing holes 246 that pass for stay cord 30 away from combination ear 248 these ends and be the third base 24 of the utility model as shown in Figure 6, the stage casing end face is equipped with a smooth follow block 247 to the contiguous base 24 that makes up ear 248 these sides " the end face both sides then up are equipped with two beads 241 respectively; the apical margin by two beads 241 forms support effect to the housing 12 that reaches circulator with the circular arc-shaped bottom portion periphery of lid 14; in addition in base 24 ", uses to reaching circulator 10 vicinity runners 20 these bottom edge.

" design still can reach and support and the effect that prevents that stay cord 30 breaks away from no matter be base 24 ', the base 24 of above-mentioned Fig. 5 or Fig. 6.

Claims

1. dragline type curtain circulator, fasten by a housing and lid and to form, be formed with one respectively in an end of housing and lid and can supply the clip combination slot of clip on rail bracket, in circulator, be provided with a helical gear that can be sheathed on the drive link, and in circulator, be provided with a worm screw that is meshed with helical gear in addition, then being provided with one in an end of circulator can be for the runner of winding stay cord, and runner central authorities then are provided with an axostylus axostyle that stretches into housing and lid portion inside, it is characterized in that:

Differ from the intermeshing end of helical gear in worm screw and to be provided with a driven gear, and be provided with a travelling gear that is meshed with driven gear in the end that the axostylus axostyle of runner stretches into housing and lid portion inside;

On the disc of runner, run through being provided with a perforation that can supply stay cord to place, be provided with the short slot that places blocking for stay cord in this place of the contiguous perforation of runner periphery in addition; And

Be provided with a base in the bottom of circulator and runner, contiguous this end of runner of this base is provided with the lacing hole that passes for stay cord.

2. dragline type curtain circulator according to claim 1 is characterized in that:

Described base is provided with the lateral margin that extends along runner on every side.

3. dragline type curtain circulator according to claim 1 and 2 is characterized in that:

The bottom that housing and lid form the clip combination bore is equipped with a combination perforation relatively, be formed with two separately combination ears in the relative end of base, on two combination ears, respectively be equipped with the combination perforation relative, in the combination perforation of housing, lid and combination ear, be equipped with a latch with housing and lid.

4. dragline type curtain circulator according to claim 3 is characterized in that:

The stage casing of described base and contiguous this end end face of combination ear are equipped with the supporting seat of using to reaching housing and lid bottom peripheral edge.

5. dragline type curtain circulator according to claim 1 is characterized in that:

The bottom that housing and lid form the clip combination bore is equipped with a combination perforation relatively, be formed with two separately combination ears in the relative end of base, on two combination ears, then respectively be equipped with the combination perforation relative with housing and lid, in the combination perforation of housing, lid and combination ear, be equipped with a latch, in addition be equipped with a supporting seat that is supported in circulator bottom arc periphery in base stage casing end face, and the contiguous combination of base ear this end end face be provided with one can be to the flat board that reaches the circulator root edge.

6. dragline type curtain circulator according to claim 1 is characterized in that:

The bottom that housing and lid form the clip combination bore is equipped with a combination perforation relatively, be formed with two separately combination ears in the relative end of base, on two combination ears, then respectively be equipped with the combination perforation relative with housing and lid, in the combination perforation of housing, lid and combination ear, be equipped with a latch, be equipped with one to the follow block that reaches the circulator bottom in base stage casing end face in addition, these end end face both sides of the contiguous combination of base ear then up are equipped with two respectively to the bead that reaches circulator arc periphery.