CN107288523B - A kind of cordless blind curtain and its working method - Google Patents
A kind of cordless blind curtain and its working method Download PDFInfo
- Publication number
- CN107288523B CN107288523B CN201610229344.9A CN201610229344A CN107288523B CN 107288523 B CN107288523 B CN 107288523B CN 201610229344 A CN201610229344 A CN 201610229344A CN 107288523 B CN107288523 B CN 107288523B
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- Prior art keywords
- drawstring
- ratchet
- spring
- shaft
- wire rod
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B7/00—Special arrangements or measures in connection with doors or windows
- E06B7/02—Special arrangements or measures in connection with doors or windows for providing ventilation, e.g. through double windows; Arrangement of ventilation roses
- E06B7/08—Louvre doors, windows or grilles
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B9/26—Lamellar or like blinds, e.g. venetian blinds
- E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
- E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B9/26—Lamellar or like blinds, e.g. venetian blinds
- E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
- E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
- E06B9/32—Operating, guiding, or securing devices therefor
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Blinds (AREA)
Abstract
The present invention relates to a kind of cordless blind curtain and its working methods, the cordless blind curtain includes upper beam, underbeam, multiple strip blades, drawstring, driving source output assembly, total output shaft, driving source, which exports, is equipped with spring in assembly, driving source output assembly is fixedly linked with total output shaft, drawstring to promote blade is arranged across each blade, and bottom end and the underbeam of drawstring are fixedly linked；Cordless blind curtain further include venetian blind drop-down when to drawstring provide rolling friction, it is static when to drawstring provide static friction ratchet assembly, ratchet assembly include can single direction rotation ratchet, the pawl for limiting ratchet counter-rotating, ratchet is fixedly connected with ratchet shaft, drawstring, which passes through ratchet shaft and winds on ratchet shaft at least one week, to be arranged, and the top of the drawstring is fixed in total output shaft after winding preset circle number in total output shaft.So that providing rolling friction when venetian blind pulls down, providing static friction, the friction disappearance when venetian blind above proposes when venetian blind is static.
Description
Technical field
The present invention relates to venetian blind technical field, specifically a kind of cordless blind curtain and its working method.
Background technique
Conventional blind curtain is made of blade group, upper beam, underbeam, drawstring, lockset, ladder band, ladder band diverter, lockset, ladder band
Diverter is placed in upper beam.It is limited since system is limited with the kind of drive, drawstring reality is after curtain is packed up actually above curtain
Practical length of hanging down, and conventional blind curtain generally at least two strands of drawstrings, rope arbitrarily place that be easy to be formed by knots tied ring-type right
Children cause accident.Improvement and rope wire clamp are carried out although having disconnect device at present, but still cannot be solved the problems, such as at all.According to
European Union's No. 2011/477/EU resolution requirement: curtain rope or chain must not form a dangerous circulating ring, when deisgn product
Corresponding safety device should be provided to reduce asphyxia risk.
Curtain without stretching wire will be being preferably selected of solving the above problems, and curtain without stretching wire is generally with coil spring or leaf spring at present
The resultant force that curtain blade gravity and hand apply is fought as driving source, is removed using frictional force and curtain gravity as the power that hand applies
Equilibrant force from after, reach the folding any position of curtain stops effect, since venetian blind is moving up and down to any position
After stopping, since blade quantity changes, the power for causing blade and underbeam to be transmitted to rope also changes therewith, such to adapt to
Variation, this requires the strength of recoil of spring and frictional force to be matched in a suitable range, due to the matter of blade
Amount is lighter, therefore the range of choice of recoil of spring power is very narrow, and the versatility of spring is poor between different venetian blinds；Due to blinds
Curtain material, the variation of size are bigger, and venetian blind generally requires to buy a variety of springs when producing；It is selected even from venetian blind specification
Suitable spring is taken, since technique is assembled and uses the uncertainty that has for be easy to causeing frictional force, dress in mass production
Screen resilience and frictional force, the unmatched situation of gravity are still easy to appear after matching；Simultaneously because the reasons such as service life, when spring is long
Between died down using rear strength, due to be easy to causeing venetian blind because that can not hover caused by screen resilience deficiency.
The balancing structure of the entitled curtain without stretching wire of China Patent No. CN 2822440Y, discloses using counterweight mode
Change lower rail weight technical solution, guarantee same width curtain under same system width change after, after curtain fully opens
It will not spring back；The technical solution can all occur just to the more demanding of clump weight, and after mass production and long-time use
The problem of opening one section of distance or the failure of completely open final stage.
The entitled Non-stay-cord venetian blind braking winding of China Patent No. CN 205036272U and Non-stay-cord venetian blind
Upper rail discloses mode use increaseds around column to increase the technical solution of drawstring frictional force, due to the upward retraction of drawstring
Strength is less than the gravity of underbeam, under the premise of not increasing lower rail weight (cost can be increase accordingly by increasing lower rail weight), to
Upper receipts curtain can feel that curtain strength is insufficient, cause curtain recovering effect poor.
In above-mentioned solution, the Frotteurism of venetian blind pull-down state and stationary state medium pulling rope is constant, therefore spring
The strength and frictional force of rebound will be matched in a suitable range, prevent venetian blind from failing.
The entitled one kind of 204299434 U of China Patent No. CN can brake type Non-stay-cord venetian blind, disclose one
The technical solution that kind is acted on using button and reset spring cooperation control elastic slice lifting rope mechanism；China Patent No. CN 201137449
A kind of entitled non-dragline type blind curtain lower rail discloses a kind of technology using switching device control shutter type curtain
Scheme；Above two technical solution requires manually to be switched, and mechanical structure is relative complex, higher cost.
Due to the rising of drawstring and the stress demand of stationary state on the contrary, in order to obtain comparatively ideal retraction strength, blinds
When curtain pulls down, since the drop-down strength that people applies is adjustable, spring strength can be larger enough, without accurately being fitted
Match；However venetian blind it is static when, to prevent blade from gliding or shrink, need matching by the gravity of recoil of spring power and venetian blind
It closes, the gravity that venetian blind is applied to drawstring changes with venetian blind opening degree, while the screen resilience of spring can be with blinds
Curtain is changed using the time, and the selection for having thereby resulted in spring is more difficult, and the versatility of spring is poor, needs basis
Size, the surface quality of workpieces situation of venetian blind carry out spring to select pairing, seriously affect production efficiency.
Therefore it needs to search out a kind of mechanism, so that venetian blind is capable of providing resistance when needing resistance, does not need
When this power can remove again, or become smaller.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of folding and unfolding flexibly, can easily be accommodated, spring selection it is unrestricted
Cordless blind curtain.
To solve the above-mentioned problems, the present invention provides a kind of cordless blind curtain, the cordless blind curtain include: upper beam,
Underbeam, multiple strip blades, drawstring, for provide reset power driving source export assembly, total output shaft, the driving source
It exports and is equipped with spring in assembly, the driving source output assembly is fixedly linked with the total output shaft, to promote the drawing of blade
Rope is arranged across each blade, and bottom end and the underbeam of the drawstring are fixedly linked；Cordless blind curtain further includes in venetian blind drop-down
To drawstring provide rolling friction, it is static when to drawstring provide static friction ratchet assembly, the ratchet assembly include can unidirectionally revolve
Ratchet, the pawl for limiting ratchet counter-rotating turned, the ratchet are fixedly connected with ratchet shaft, and the drawstring passes through described
Ratchet shaft simultaneously winds setting at least one week on the ratchet shaft, and the top of the drawstring winds preset in the total output shaft
It is fixed in total output shaft after circle number；In use, pulling down the underbeam of cordless blind curtain with hand, drawstring is tightened and is moved downward,
Due to the presence of frictional force, drawstring drives ratchet, total output shaft, driving source to export assembly synchronous rotary, so that driving source exports
Deformation occurs for spring in assembly, and ratchet assembly is that the friction that drawstring provides is rolling friction, and there is no need to apply more volumes
The drop-down of curtain can be completed in the outer pulling force for resisting frictional resistance；When removing the lower pulling force on underbeam, due to the presence of pawl, spine
Wheel can not reversely rotate, and the friction between drawstring and ratchet shaft switchs to static friction by rolling friction, since rope is wound on cylinder
Frictional force characteristic, frictional force greatly enhances, this frictional force range is far longer than springback power and the downward weight of venetian blind
Strength needed for power (weight of blade and underbeam) balance, so that the underbeam and blade of venetian blind are remain stationary, and balance is not easy
It is destroyed；When needing to pack up venetian blind, it is only necessary to underbeam application uplift force so that underbeam is in the position for wishing to stop,
This moment drawstring comes loose, and static friction between drawstring and ratchet shaft disappears, spring reset, drive the driving source output assembly,
Total output shaft synchronous rotary, so that extra drawstring is again wrapped around in total output shaft；When venetian blind is retracted to predetermined position, remove
The uplift force on underbeam is removed, drawstring is tightened, and the static friction between drawstring and ratchet shaft is restored, and the underbeam and blade of venetian blind are again
It remain stationary.
Further, the cordless blind curtain further includes the ladder band for adjusting blade angle, is socketed in the total output shaft
There is the ladder band diverter for adjusting ladder band direction, the bottom end of the ladder band is fixedly linked with the underbeam, the top of the ladder band
It holds solderless wrapped connection on ladder band diverter, is conveniently adjusted the angle of blade.
Further, driving source output assembly further include spring case, spring driving shaft, can be mutual with the spring driving shaft
The spring passive axis for carrying out rotatable engagement is mutually driven, the spring driving shaft, spring passive axis are located in the spring case, described
Spring is set in spring driving shaft, which is additionally provided with spring case capping, and spring case capping is equipped with suitable for described total defeated
The through-hole that shaft passes through is used for so that the total output shaft passes through the through-hole and is fixedly linked with the spring passive axis to total
Output shaft provides power.
Further, the cordless blind curtain further includes for winding and the drawstring wire rod on fixed pulling rope top, the drawing
Rope wire rod is socketed in the total output shaft, the drawstring wire rod setting cylindrical, to reduce rope in drawstring coiling
The resistance of lateral displacement on stick, the leading-out terminal diameter of the drawstring wire rod by it is outer and it is interior be gradually reduced, be convenient for drawstring ordered arrangement.
Further, the cordless blind curtain further includes wire rod big envelope compatible with the drawstring coiling rod shape, institute
It states drawstring wire rod and is equipped with and be suitable for the card slot that the drawstring passes through, the top of the drawstring is stuck in card slot, the wire rod envelope
Set is inserted into the end of the drawstring wire rod, so that drawstring is clamped in card slot.
Further, the ratchet is single action fit on ratchet mechanism, and the cordless blind curtain further includes for installing drawstring
The second pivot is arranged in the ratchet shaft of the ratchet in the mounting base of wire rod and ratchet mounting base for installing ratchet assembly,
Through the second pivotal engagement in the ratchet mounting base, the ratchet mounting base is arranged in the mounting base ratchet
The downside of the leading-out terminal of interior drawstring wire rod, for preventing the pawl of the ratchet counter-rotating that the opposite of the ratchet is arranged in
Inside.Since the frictional resistance size that drawstring is wound on cylinder is positively correlated with winding turns, coefficient of friction, force size, spine
Wheel mechanism is exactly frictional resistance when utilizing this principle amplification venetian blind static, to more effectively guarantee venetian blind in any position
The stopping set will not all fail, and resistance can be smaller than its resistance when static when venetian blind moves upwards, and guarantees it well
It can easily shrink upwards.
Further, the cordless blind curtain further includes the leading block that the ratchet opposite exterior lateral sides are arranged in, and the guiding is sliding
Wheel in the ratchet mounting base, is conducive to the drawstring and slided by the first pivotal engagement.
Further, the upper beam is equipped with U-shaped groove, and one end of upper beam, the drawing is arranged in the driving source output assembly
Rope wire rod, total output shaft are arranged in the U-shaped groove of upper beam, beautiful and generous.
Further, cordless blind curtain further includes the diverter mounting base for installing ladder band diverter, for installing and limiting
Ladder band diverter processed.
Further, the bottom end for the drawstring being wrapped on ratchet shaft is pierced by by the relative inner of ratchet shaft, and each blade is equipped with
Run through slot accordingly, drawstring is arranged in the ladder band of cordless blind curtain end across described through slot, so that drawstring is hidden
It covers and is arranged between two ladder bands, good concealment is highly-safe, beautiful and generous.
The working method of above-mentioned cordless blind curtain, includes the following steps:
A, when needing to open venetian blind, the underbeam of cordless blind curtain is pulled down with hand, drawstring is tightened and is moved downward, by
In the presence of frictional force, drawstring drives leading block, ratchet, drawstring wire rod, total output shaft, spring passive axis, spring actively
Axis synchronous rotary, each louvre blade scatter downwards, and deformation occurs for the spring in spring driving shaft at this time, and ratchet assembly provides for drawstring
Friction be rolling friction.
B, when removing the lower pulling force on underbeam, due to the presence of pawl, ratchet can not be reversely rotated, and ratchet assembly is drawstring
The friction of offer switchs to static friction by rolling friction, and frictional force greatly enhances, and the lifting force of spring is less than drawstring and ratchet shaft
Between frictional force so that the underbeam and blade of venetian blind are remain stationary.
C, when needing to pack up venetian blind, uplift force is applied to underbeam so that underbeam is in the position for wishing to stop, herein
Moment drawstring comes loose, and the static friction between drawstring and ratchet shaft disappears, and spring reset drives the spring driving shaft, spring quilt
Moving axis, total output shaft, drawstring wire rod synchronous rotary, so that extra drawstring is again wrapped around on drawstring wire rod.
D, when venetian blind is retracted to predetermined position, the uplift force on underbeam is removed, drawstring is in tensioned state, drawstring and spine
Static friction between wheel shaft is restored, and the lifting force of spring is less than the frictional force between drawstring and ratchet shaft, the underbeam of venetian blind
It is remain stationary again with blade.
The technical effect of invention: (1) cordless blind curtain of the invention passes through the spine of single direction rotation compared with the existing technology
Wheel, pawl, ratchet shaft and drawstring cooperate, provided in venetian blind drop-down rolling friction, provide when venetian blind is static static friction,
It rubs and disappears when venetian blind above mentions, realize the drop-down of venetian blind any position and above mention, due to static friction and rolling friction
It differs greatly, therefore the screen resilience of spring can not be limited by venetian blind weight, assembled condition, without the ruler according to venetian blind
Very little, surface quality of workpieces situation carries out spring to select pairing, solves the curtain of different size in the specification limit of very little
The problem of needing to match the spring of suitable elastic force, the spring between different size curtain can be exchanged arbitrarily, be increased and decreased, and be suitable for any
The wide curtain with length of curtain, is not necessarily to adjustment spring strength and underbeam load-bearing, improves the interchangeability of spring, greatly improves production effect
Rate reduces production cost；The biggish spring of screen resilience can be selected, solve venetian blind after a period of use due to spring
The problem of venetian blind folding and unfolding caused by failure is failed, service life is substantially improved；(2) by the hidden setting in the both ends of drawstring upper
In beam, underbeam, without drawstring outside venetian blind, safety accident is avoided the occurrence of.
Detailed description of the invention
Invention is further described in detail with reference to the accompanying drawings of the specification:
Fig. 1 is the dimensional decomposition structure diagram of cordless blind curtain of the present invention；
Fig. 2 is the assembling schematic diagram of drawstring of the invention, drawstring wire rod, ratchet and leading block；
Fig. 3 is the left view of Fig. 2；
Fig. 4 be drawstring of the invention, drawstring wire rod, ratchet, ratchet mounting base and leading block assembling schematic diagram；
Fig. 5 be ratchet of the invention, pawl, ratchet mounting base assembling schematic diagram；
Fig. 6 is the stereoscopic mechanism schematic diagram of drawstring wire rod of the present invention；
Fig. 7 is the dimensional decomposition structure diagram of driving source output assembly of the invention.
In figure: upper beam 1, underbeam 2, lower big envelope 3, blade 4, drawstring 5, ladder band 6, driving source output assembly 7, spring case 71,
Spring driving shaft 72, spring 73, spring passive axis 74, spring case capping 75, through-hole 76, total output shaft 8, mounting base 9, diverter
Mounting base 10, ladder band diverter 11, drawstring wire rod 12, card slot 121, wire rod leading-out terminal 122, wire rod big envelope 13, guiding
Pulley 14, ratchet 15, ratchet shaft 151, pawl 16, ratchet mounting base 17, the first pivot 18, the second pivot 19.
Specific embodiment
Embodiment 1
As shown in Figure 1, without drawstring venetian blind include upper beam 1, underbeam 2, multiple strip blades 4, drawstring 5, for providing
The driving source output assembly 7 of power, total output shaft 8 are resetted, for winding and the drawstring wire rod 12 of fixed pulling rope 5, such as Fig. 7 institute
Show, it includes spring case 71, spring driving shaft 72, spring 73 and spring in spring driving shaft 72 that driving source, which exports assembly 7,
The spring passive axis 74 that driving shaft 72 matches, spring driving shaft 72, spring passive axis 74 cooperate in spring case 71 can be mutual
Drive is rotated, which is additionally provided with spring case capping 75, and spring case capping 75 is equipped with logical suitable for total output shaft 8
The through-hole 76 crossed, so that total output shaft 8 passes through through-hole 76 and is fixedly linked with spring passive axis 74.
Cordless blind curtain further includes 3 groups (other embodiments can be adjusted according to venetian blind size) for adjusting blade 4
The ladder band 6 of angle, each blade 4 are successively set in the quadrangle space of ladder band 6, and blade 4 is equipped with runs through slot accordingly, are respectively passed through
Wears groove is set between ladder band 6, drawstring 5 sequentially pass through each blade 4 through slot be arranged between ladder band 6 so that drawstring 5 is hidden；
Be socketed in total output shaft 8 ladder band diverter 11(other embodiments for adjusting ladder band direction can according to venetian blind size into
Row adjustment), bottom end and the underbeam 2 of ladder band 6 are fixedly linked, and the top solderless wrapped connection of ladder band 6 is on ladder band diverter 11, ladder band diverter
11 are mounted in diverter mounting base 10, for adjusting the angle of each blade 4.
As shown in fig. 6, the setting cylindrical of drawstring wire rod 12, drawstring wire rod 12 are mounted in mounting base 9, drawstring around
12 end of bar, which is equipped with, is suitable for the card slot 121 that passes through of drawstring 6,122 diameter of leading-out terminal of the drawstring wire rod 12 by it is outer and it is interior by
Decrescence small, the quantity of drawstring wire rod 12 is 2 (other embodiments can be adjusted according to venetian blind size), and drawstring 5 is 2
(other embodiments can be adjusted according to venetian blind size), ladder band diverter 11, drawstring wire rod 12 are successively spaced and are socketed in
In total output shaft 8, in mirror settings, (other embodiments can make wire rod leading-out terminal according to identical suitable to 2 drawstring wire rods 12
Sequence is put) so that the two-end part of total output shaft 8 is arranged in the leading-out terminal 121 of drawstring wire rod 12.
As shown in figure 5, drawing cordless blind curtain further includes ratchet assembly, ratchet assembly includes single action fit on ratchet mechanism 15
(other embodiments can be interior cooperation ratchet mechanism), the pawl 16 for limiting 15 counter-rotating of ratchet, leading block 14, spine
Wheel 15 is fixedly connected with ratchet shaft 151, and the second pivot 19 is arranged in the ratchet shaft 151 of ratchet 15, and ratchet 15 passes through the second pivot
19 are rotatably assorted in ratchet mounting base 17, and the leading-out terminal 122 of drawstring wire rod 12 in mounting base 9 is arranged in ratchet mounting base 17
Downside, for preventing the pawl 16 of 15 counter-rotating of ratchet to be arranged in the relative inner of ratchet 15, leading block 14 passes through the
One pivot 18 is rotatably assorted in ratchet mounting base 17, and the opposite exterior lateral sides of ratchet 15 are arranged in leading block 14.
As shown in Figure 2, Figure 3 and Figure 4, the top of drawstring 5 is fixed in the card slot 121 of drawstring wire rod 12, and in drawstring
It winds to enter ratchet shaft 151 through leading-out terminal 122 and wind with one circuit on ratchet shaft 151 after preset circle number on wire rod 12 and set
It sets, the bottom end for the drawstring 5 being wrapped on ratchet shaft 151 is pierced by by the relative inner of ratchet shaft 151 then passes through pulley 14, and according to
Secondary to run through slot across each blade 4, bottom end and the underbeam 2 of drawstring 5 are fixedly linked, and the both ends of underbeam 2 are sealed using lower big envelope 3
Dress.Upper beam 1 is equipped with U-shaped groove, and one end of upper beam 1 is arranged in driving source output assembly 7, and (other embodiments can be according to venetian blind ruler
It is very little to be driven using multiple driving sources output assembly), mounting base 9, ratchet mounting base 17, diverter mounting base 10 are accordingly arranged
In U-shaped groove, prevents it from directly contacting between upper beam 1 and cause to wear.
Cordless blind curtain of the invention is cooperated by the ratchet of single direction rotation, pawl, ratchet shaft and drawstring, in venetian blind
Rolling friction is provided when drop-down, static friction, the friction disappearance when venetian blind above mentions are provided when venetian blind is static, realizes venetian blind
It the drop-down of any position and above mentions, due to differing greatly for static friction and rolling friction, the screen resilience of spring can not be by
The limitation of venetian blind weight, assembled condition, without being selected according to size, the surface quality of workpieces situation of venetian blind spring
Pairing, solves the problems, such as that the curtain of different size needs to match in the specification limit of very little the spring of suitable elastic force, different
Spring between specification curtain can be exchanged arbitrarily, be increased and decreased, and be suitable for the wide curtain with length of any curtain, be not necessarily to adjustment spring strength
With underbeam load-bearing, the interchangeability of spring is improved, production efficiency is greatly improved, reduces production cost；Can be selected screen resilience compared with
Big spring, solving the problems, such as venetian blind, the venetian blind folding and unfolding as caused by the failure of spring is failed after a period of use,
Service life is substantially improved；By the hidden setting in the both ends of drawstring in upper beam, underbeam, without drawstring outside venetian blind, avoid the occurrence of
Safety accident.
Embodiment 2
The application method of above-mentioned drawing cordless blind curtain, includes the following steps:
A, when needing to open venetian blind, the underbeam 2 of cordless blind curtain is pulled down with hand, drawstring 5 is tightened and is moved downward,
Due to the presence of frictional force, drawstring 5 drives leading block 14, ratchet 15, drawstring wire rod 12, total output shaft 8, spring passive axis
74,72 synchronous rotary of spring driving shaft, each louvre blade scatter downwards, and deformation occurs for the spring 73 in spring driving shaft 72 at this time,
Friction between drawstring and ratchet assembly is rolling friction.
B, when removing the lower pulling force on underbeam, due to the presence of pawl 16, ratchet 15 can not be reversely rotated, ratchet assembly spine
Wheel shaft 151 is that the friction that drawstring 5 provides switchs to static friction by rolling friction, and frictional force greatly enhances, the lifting force of spring 73
Less than the frictional force between drawstring 5 and ratchet shaft 151, so that the underbeam 2 and each blade 4 of venetian blind are remain stationary.
C, when needing to pack up venetian blind, to the application uplift force of underbeam 2 so that underbeam 2 is in the position for wishing to stop,
This moment drawstring 5 comes loose, and the static friction between drawstring 5 and ratchet shaft 151 disappears, and spring 73 resets, and drives the spring actively
Axis 72, spring passive axis 74, total output shaft 7,12 synchronous rotary of drawstring wire rod, so that extra drawstring 5 is again wrapped around drawing
It restricts on wire rod 12.
D, after venetian blind is retracted to predetermined position, the uplift force on underbeam 2 is removed, drawstring 5 is in tensioned state, drawstring 5
Static friction between ratchet shaft 151 is restored, and the lifting force of spring 73 is less than the frictional force between drawstring 5 and ratchet shaft 151,
The underbeam 2 and blade 4 of venetian blind are remain stationary again.
Make venetian blind be capable of providing resistance when needing resistance using ratchet, ratchet shaft, pawl and drawstring, is not required to
This power can remove again when wanting, or become smaller, and the limitation of venetian blind weight is no longer received in the selection of spring, and venetian blind is easy to grasp
Control.
Obviously, the above embodiment is merely an example for clearly illustrating the present invention, and is not to of the invention
The restriction of embodiment.Also it is not limited to the use of venetian blind system, honeycomb curtain etc. is all suitable for.For the general of fields
For logical technical staff, other different forms of changes or modifications may be made based on the above description.Here it is not necessarily to
Also all embodiments can not be exhaustive.And these are derived from the spirit of the present invention obvious variation
Or it changes and is still in the protection scope of this invention.
Claims (10)
1. a kind of cordless blind curtain, which is characterized in that including upper beam (1), underbeam (2), multiple strip blades (4), drawstring
(5), it for providing the driving source output assembly (7), total output shaft (8) that reset power, is set in driving source output assembly (7)
Have spring (73), driving source output assembly (7) is fixedly linked with the total output shaft (8), to lift the drawing of blade (4)
(5) are restricted across each blade (4) setting, bottom end and the underbeam (2) of the drawstring (5) are fixedly linked, and underbeam is (under 2 both ends use
(3 are packaged big envelope;
Cordless blind curtain further include venetian blind drop-down when to drawstring provide rolling friction, it is static when to drawstring provide static friction
Ratchet assembly, the ratchet assembly include ratchet (15), the pawl (16) for limiting ratchet (15) counter-rotating, the ratchet
(15) it is fixedly connected with ratchet shaft (151), the drawstring (5) passes through the ratchet shaft (151) and on the ratchet shaft (151)
Be arranged within winding at least one week, the top of the drawstring (5) wound on the total output shaft (8) be fixed on after preset circle number it is always defeated
On shaft (8).
2. cordless blind curtain according to claim 1, which is characterized in that further include the ladder band for adjusting blade angle
(6), the ladder band diverter (11) for adjusting ladder band (6) direction is socketed on the total output shaft (8), the ladder band (6)
Bottom end is fixedly linked with the underbeam (2), and the top solderless wrapped connection of the ladder band (6) is on ladder band diverter (11).
3. cordless blind curtain according to claim 2, which is characterized in that driving source output assembly (7) further includes bullet
Spring box (71), can drive mutually the spring passive for carrying out rotatable engagement with the spring driving shaft (72) at spring driving shaft (72)
Axis (74), the spring driving shaft (72), spring passive axis (74) are located in the spring case (71), which also sets
There is spring case to cover (75), spring (73) is set in spring driving shaft (72), and it is described equipped with being suitable for which covers (75)
The through-hole (76) that total output shaft (8) passes through, so that the total output shaft (8) passes through the through-hole (76) and the spring passive axis
(74) it is fixedly linked.
4. cordless blind curtain according to claim 3, which is characterized in that further include for winding and fixed pulling rope top
(5) drawstring wire rod (12), the drawstring wire rod (12) are socketed on the total output shaft (8), the drawstring wire rod
(12) setting cylindrical, leading-out terminal (122) diameter of the drawstring wire rod is by outer and interior be gradually reduced.
5. cordless blind curtain according to claim 4, which is characterized in that further include and drawstring wire rod (12) shape
Compatible wire rod big envelope (13), the drawstring wire rod (12), which is equipped with, is suitable for the card slot (121) that the drawstring (5) pass through,
The top of the drawstring (5) is stuck in card slot (121), and the wire rod big envelope (13) is inserted into the end of the drawstring wire rod (12)
Portion, so that drawstring (5) is clamped in card slot (121).
6. cordless blind curtain according to claim 5, which is characterized in that the ratchet (15) is single action fit on ratchet machine
Structure.
7. cordless blind curtain according to claim 6, which is characterized in that the cordless blind curtain further includes drawing for installing
The mounting base (9) and the ratchet mounting base (17) for installing ratchet assembly, leading block (14) of rope wire rod (12), the spine
It takes turns in the ratchet shaft (151) of (15) and the second pivot (19) is set, the ratchet (15) is rotatably assorted by the second pivot (19)
In the ratchet mounting base (17), the ratchet mounting base (17) is arranged in the interior drawstring wire rod (12) of the mounting base (9)
The downside of leading-out terminal (122), for preventing the pawl (16) of the ratchet (15) counter-rotating to be arranged in the ratchet (15)
The opposite exterior lateral sides of the ratchet are arranged in relative inner, the leading block (14).
8. cordless blind curtain according to claim 7, which is characterized in that be wrapped in the drawstring (5) on ratchet shaft (151)
Bottom end is pierced by by the relative inner of ratchet shaft (151), and each blade (4) is equipped with runs through slot accordingly, and drawstring (5) passes through described pass through
Wears groove is arranged between the ladder band (6) of cordless blind curtain end.
9. cordless blind curtain according to claim 8, which is characterized in that the upper beam (1) is equipped with U-shaped groove, the source
Power output assembly (7) setting total output shaft (8), is arranged in upper beam in one end of upper beam (2), the drawstring wire rod (12)
(2) in U-shaped groove.
10. a kind of working method of the cordless blind curtain as described in one of claim 7-9, which is characterized in that including walking as follows
It is rapid:
A, when needing to open venetian blind, the underbeam (2) of cordless blind curtain is pulled down with hand, drawstring (4) is tightened and is moved downward,
Due to the presence of frictional force, drawstring (5) drive leading block (14), ratchet (15), drawstring wire rod (12), total output shaft (8),
Spring passive axis (74), spring driving shaft (72) synchronous rotary, each blade (4) are scattered downwards, at this time in spring driving shaft (72)
Spring (73) deformation occurs, the friction between drawstring (5) and ratchet assembly be rolling friction；
B, when removing the lower pulling force on underbeam (2), due to the presence of pawl (16), ratchet (15) can not be reversely rotated, ratchet group
Part ratchet shaft (151) is that the friction that drawstring (5) provide switchs to static friction by rolling friction, so that the underbeam (2) and leaf of venetian blind
Piece (4) is remain stationary；
C, when needing to pack up venetian blind, to underbeam (2) application uplift force so that underbeam (2) is in the position for wishing to stop,
This moment drawstring (5) comes loose, and the friction between drawstring (5) and ratchet shaft (151) disappears, and spring (73) resets, and drives the bullet
Spring driving shaft (72), spring passive axis (74), total output shaft (8), drawstring wire rod (12) synchronous rotary, so that extra drawstring
(5) it is again wrapped around on drawstring wire rod (12)；
D, when venetian blind is retracted to predetermined position, remove the uplift force on underbeam, drawstring (5) is in tensioned state, drawstring (5) and
Static friction between ratchet shaft (151) is restored, and the underbeam (2) and blade (4) of venetian blind are remain stationary again.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610229344.9A CN107288523B (en) | 2016-04-13 | 2016-04-13 | A kind of cordless blind curtain and its working method |
| PCT/CN2016/095294 WO2017177588A1 (en) | 2016-04-13 | 2016-08-15 | Cordless venetian blind and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610229344.9A CN107288523B (en) | 2016-04-13 | 2016-04-13 | A kind of cordless blind curtain and its working method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107288523A CN107288523A (en) | 2017-10-24 |
| CN107288523B true CN107288523B (en) | 2019-04-05 |
Family
ID=60042290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610229344.9A Active CN107288523B (en) | 2016-04-13 | 2016-04-13 | A kind of cordless blind curtain and its working method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107288523B (en) |
| WO (1) | WO2017177588A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107620559A (en) * | 2017-10-31 | 2018-01-23 | 李七妹 | A kind of telescopic curtain of casement |
| CN107701078A (en) * | 2017-10-31 | 2018-02-16 | 李七妹 | A kind of constant force rebounding mechanism and the curtain using the constant force rebounding mechanism |
| CN107654178A (en) * | 2017-10-31 | 2018-02-02 | 李七妹 | A kind of rope drum mechanism and the curtain using the rope drum mechanism |
| CN209413813U (en) * | 2018-11-16 | 2019-09-20 | 雷振邦 | Louver driving device |
| CN110185372A (en) * | 2019-07-03 | 2019-08-30 | 浙江万宝塑料制品有限公司 | It is a kind of without drawing curtain and its transmission component |
| CN110242197B (en) * | 2019-07-03 | 2024-04-26 | 安徽宝盈家居有限公司 | Gravity balanced anti-deflection shutter curtain |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4346749A (en) * | 1980-08-18 | 1982-08-31 | Sears, Roebuck And Company | Motor and roller support for window shades and the like |
| US6571853B1 (en) * | 2000-07-06 | 2003-06-03 | Newell Window Furnishings, Inc. | Cordless blind having variable resistance to movement |
| CN101975017B (en) * | 2010-10-19 | 2012-02-01 | 浙江大学 | Intelligent door, window and sunshade integrated device |
| TWI468580B (en) * | 2012-03-07 | 2015-01-11 | Bao Song Prec Industry Co Ltd | Control device for liberally stopping a cordless blind |
| US8708023B2 (en) * | 2012-09-26 | 2014-04-29 | Wen-Yu Wu | Cordless blind assembly |
| CN103452468A (en) * | 2013-08-19 | 2013-12-18 | 广州丰鼎五金制品有限公司 | Non-stay-cord venetian blind |
| CN203701911U (en) * | 2013-12-30 | 2014-07-09 | 广州丰鼎五金制品有限公司 | No-rope venetian blind spring piece digging rope mechanism |
| CN205532186U (en) * | 2016-04-13 | 2016-08-31 | 溧阳新元窗帘制品有限公司 | Wireless blind |
-
2016
- 2016-04-13 CN CN201610229344.9A patent/CN107288523B/en active Active
- 2016-08-15 WO PCT/CN2016/095294 patent/WO2017177588A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017177588A1 (en) | 2017-10-19 |
| CN107288523A (en) | 2017-10-24 |
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