CN209228294U - Transmission mechanism, power box and curtain - Google Patents
Transmission mechanism, power box and curtain Download PDFInfo
- Publication number
- CN209228294U CN209228294U CN201821213058.4U CN201821213058U CN209228294U CN 209228294 U CN209228294 U CN 209228294U CN 201821213058 U CN201821213058 U CN 201821213058U CN 209228294 U CN209228294 U CN 209228294U
- Authority
- CN
- China
- Prior art keywords
- axle body
- rope drum
- italic
- screw thread
- transmission mechanism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Curtains And Furnishings For Windows Or Doors (AREA)
Abstract
The utility model provides transmission mechanism, power box and curtain, wherein, transmission mechanism includes the first axle body, the second axle body and rope drum, italic is convexly equipped on the first axle body, the top surface of italic gradually decreases at a distance from the central axis of the first axle body along the axial direction of the first axle body, spiral helicine external screw thread is offered on the second axle body, the first axle body is docked and is pivotally connected with the second axle body, card slot and internal screw thread are offered in rope drum, rope drum is sheathed on the first axle body and the second axle body, and the internal screw thread in rope drum is meshed with the external screw thread of the second axle body, italic is slidably inserted into card slot, the different location of the top surface of italic is driven to support card slot by the rotation of the first axle body, rope drum is set to be rotated and be translated around external screw thread.Since the utility model is by changing the stress torque of rope drum, thus during realizing drop-down expansion curtain and during pop-up shrink curtains the pulling force of manpower with lift that power is constant so that curtain fold and be unfolded it is more labor-saving, convenient.
Description
Technical field
The utility model relates to curtain field more particularly to a kind of transmission mechanisms, power box and curtain.
Background technique
In conventional blind curtain, on the trapezoidal rope that multiple blade supports extend between upper rail and lower rail, one or more is drawn
Rope extends to except upper rail from lower rail through lath.Upward active force on drawstring promotes lower rail toward upper rail, and by lath from
Bottom is received folded toward the top.It is limited since system is limited with the kind of drive, drawstring reality is after curtain is packed up actually above window
Curtain it is practical hang down length, rope arbitrarily places be easy to be formed by knots tied ring-type accident is caused to children.
Curtain without stretching wire is being preferably selected of solving the above problems, and curtain without stretching wire generally uses actuating device of the spring at present
As driving source, and rope rolling reel or axis connection is turned around, drawstring is wound on the reel or turns around on axis.The actuating device of the spring is given
Drawstring provides lifting force, to fight the resultant force that curtain blade gravity and hand apply, applies using frictional force and curtain gravity as hand
The power that adds withdraw after equilibrant force, the contraction or expansion any position for reaching curtain stop effect.However, actuating device of the spring
The balance of power is extremely difficult to.When curtain stretching, extension, blade is supported by trapezoidal rope, is reduced by the weight of actuating device of the spring support.
On the contrary, the vaned weight needs of lower rail and institute are supported by actuating device of the spring when curtain retracts.Therefore, when spring drives
When the lifting force that device provides is constant, then it can lead to the problem of many.For example, when manpower pulls down the window curtain, actuating device of the spring branch
The weight of support is gradually reduced, and the pulling force of manpower is then increasing and reaches maximum when drawing to bottom, when loosing one's grip, due to
Inertia, curtain will appear the case where rebound is shunk upwards.Rebound phenomenon in order to prevent, existing curtain need in lower rail or most lower
Counterweight object is installed at the blade in face additional to prevent to spring back.When manpower lifts lower rail progress shrink curtains, actuating device of the spring branch
The weight of support is gradually increased, and the strength needs that manpower is lifted are increasing, and reach maximum when vanes retract to the top, bullet
When spring driving device lifting force is inadequate, curtain may not be maintained at fully retracted position, and may slowly fall.In order to prevent
The problem, existing curtain increase the frictional force of transmission parts (such as drawstring, drive rod) in the transmission system of upper rail, with balance
The stress of actuating device of the spring.
However, increasing the counterweight of lower rail to prevent non-return bullet and increasing the frictional force of upper rail transmission parts to prevent from hanging
Mode greatly increases structural complexity, higher cost.Since technique assembly and use be easy to cause frictional force in mass production
Have uncertainty, screen resilience and frictional force, the unmatched situation of gravity are still easy to appear after assembly.
Therefore, it is necessary to a kind of improved transmission mechanism, power box and curtain be provided, to overcome the above-mentioned prior art not
Foot realizes the flexible easy to be reliable of curtain.
Utility model content
The purpose of this utility model is to provide a kind of transmission mechanisms, change torque in rotation transmission process, so that
When manual operation curtain is folded and is unfolded, the active force of manpower is kept in balance, more labor-saving, convenient, and is not in window
The case where curtain rebound and curtain glide, and the structure is convenient for assembling, saves manpower.
The another object of the utility model is to provide a kind of power box, changes torque in rotation transmission process, make
Manual operation window curtain when being folded and being unfolded, the active force of manpower is kept in balance, more labor-saving, convenient, and is not in
The case where curtain rebound and curtain glide, and the structure is convenient for assembling, saves manpower.
The further object of the utility model is to provide a kind of curtain, changes torque in rotation transmission process, so that
When manual operation curtain is folded and is unfolded, the active force of manpower is kept in balance, more labor-saving, convenient, and is not in window
The case where curtain rebound and curtain glide, and the structure is convenient for assembling, saves manpower.
To achieve the above object, the utility model provides a kind of transmission mechanism, including the first axle body, the second axle body and around
Rope roll is convexly equipped with italic, the top surface of italic edge at a distance from the central axis of the first axle body on the first axle body
The axial direction of the first axle body gradually decreases, and offers spiral helicine external screw thread on the second axle body, the first axle body with
It the second axle body docking and is pivotally connected, offers card slot and internal screw thread in the rope drum, the rope drum is sheathed on described the
On one axis body and the second axle body, and the internal screw thread in the rope drum is meshed with the external screw thread of the second axle body, institute
It states italic to be slidably inserted into the card slot, the difference for the top surface for driving the italic by the rotation of the first axle body
The card slot is supported in position, and the rope drum is made to be rotated and be translated around the external screw thread.
Preferably, the italic structure triangular in shape, the inclined-plane of the triangular structure is the top surface of the italic.
Preferably, the italic is in be symmetrically disposed on the first axle body.
Preferably, the card slot is in " ten " font.
Preferably, being equipped with the ribs for reinforcing the card slot in the rope drum.
Preferably, the rope drum include the first installation part, the second installation part and cylinder in hollow structure, described first
Installation part is installed on one end of the cylinder, and one end of the first axle body through first installation part and is protruded into described hollow
In structure, the card slot is set in the cylinder, and second installation part is installed on the other end of the cylinder, the interior spiral shell
Line is set in second installation part, and one end of the second axle body is placed through in second installation part and with described first
Axis body pivot joint.
Preferably, the transmission mechanism further includes pedestal, the first axle body is articulated in one end of the pedestal, described
Two axis bodies are fixed on the other end of the pedestal.
A kind of power box is used for curtain, including jack, output shaft and above-mentioned transmission mechanism, the jack
It is connect by the output shaft with the first axle body.
Preferably, one end of the first axle body is equipped with the socket for the output shaft grafting.
A kind of curtain, including upper rail, drawstring and the mobilizable lower rail of the relatively described upper rail and multiple blades, feature exist
In further including above-mentioned power box, the power box is set in the upper rail, one end of the drawstring and the rope drum phase
Even, the other end of the drawstring is connected through the blade and the lower rail and with the lower rail, in external force and the power box
Driving under, the drawstring is wrapped on the rope drum or is detached from from the rope drum, to realize the receipts of the blade
It closes or is unfolded.
Compared with prior art, the first axle body of the utility model by the top surface of italic support the card slot of rope drum come
Rope drum rotation is driven, since axial direction of the top surface of italic at a distance from the central axis of the first axle body along the first axle body gradually subtracts
It is few, therefore by changing the stress torque of rope drum during rotation is driven to rope drum by the first axle body, thus under realizing
Stretch during windowing curtain and during pop-up shrink curtains the pulling force of manpower with to lift power constant, without using increasing
Power so that curtain fold and be unfolded it is more labor-saving, convenient, and be not in curtain rebound and curtain glide the case where.It compares
The scheme of the prior art, the configuration of the present invention is simple, manufacturing cost is low, easy to assembly, save built-up time and artificial, and uses
Service life is long, and technical requirements are low, is suitable for popularization and application.
Detailed description of the invention
Fig. 1 is the part isometric structural schematic diagram of the curtain of the utility model.
Fig. 2 is the schematic perspective view of the transmission mechanism of the utility model.
Fig. 3 is the explosive view of the transmission mechanism of the utility model.
Fig. 4 is the cross-sectional view of the transmission mechanism of the utility model.
Fig. 5 is the cross-sectional view of another state of transmission mechanism of the utility model.
Fig. 6 is the cross-sectional view of the cylinder of the transmission mechanism of the utility model.
Fig. 7 is cross-sectional view when two different location of top surface of the italic of the transmission mechanism of the utility model supports card slot.
Specific embodiment
In order to which the technology contents, construction feature of the utility model is described in detail, below in conjunction with embodiment and cooperate attached drawing
It is described further.
1 is please referred to, the utility model is intended to provide a kind of curtain 300, which includes upper rail 301, drawstring 302, moves
Power box 200 and the opposite mobilizable lower rail 303 of upper rail 301 and multiple blades 304, power box 200 are set in upper rail 301,
Manpower pulls lower rail 303 that can realize that each blade 304 stretches, and lifting lower rail 303 can realize that the receipts of each blade 304 are folded, to realize
The expansion of curtain 300 folds.Each blade 304 is supported on the trapezoidal rope extended between upper rail 301 and lower rail 303 with proportional spacing
On 305, one end of drawstring 302 is connected with rope drum 3, the other end penetrating blade 304 and lower rail 303 of drawstring 302 and and lower rail
303 are connected, and under the driving of external force and power box 200, drawstring 302 is wrapped on rope drum 3 or is detached from from rope drum 3, from
And realize folding or being unfolded for blade 304.
Please continue to refer to 1, power box 200 includes jack 201, output shaft 202 and transmission mechanism 100, jack
201 can be used existing torsional spring, spring etc., which uses the prior art, therefore not burdensome herein；Folding and unfolding
Mechanism 201 and transmission mechanism 100 are respectively arranged in upper rail 301, and jack 201 passes through output shaft 202 and transmission mechanism 100
Connection.Specifically, as shown in Figures 2 and 3, transmission mechanism 100 includes the first axle body 1, the second axle body 2 and rope drum 3；First axle
Italic 11 is convexly equipped on body 1, the top surface 111 of italic 11 is at a distance from the central axis of the first axle body 1 along the axial direction of the first axle body 1
It gradually decreases, specifically, the structure triangular in shape of italic 11, the inclined-plane of triangular structure is the top surface 111 of italic 11, in other realities
Apply in example, italic 11 can also tapered structure, the side of pyramidal structure is the inclined-plane of italic 11；Spiral shell is offered on the second axle body 2
The external screw thread 21 of shape is revolved, the first axle body 1 is docked and is pivotally connected with the second axle body 2, and the first axle body 1 and the second axle body 2 are coaxially connected；
Rope drum 3 is for wiring or puts rope, card slot 332 and internal screw thread 321 is offered in rope drum 3, rope drum 3 is sheathed on the first axle body
1 and the second axle body 2 on, and the internal screw thread 321 in rope drum 3 is meshed with the external screw thread 21 of the second axle body 2, and italic 11 is slidably
Ground is inserted into card slot 332；Specifically, in order to enable drawstring 302 can close being wound on rope drum 3 helically, drawstring 302
Diameter it is adjacent with the two of external screw thread 21 the spacing of screw thread it is identical；Specifically, one end of the first axle body 1 is equipped with for output shaft
The socket 12 of 202 grafting, italic 11 are located at the other end of the first axle body 1；One end of output shaft 202 is connect with jack 201,
The other end of output shaft 202 is connect with the socket 12.Under the driving of manpower and jack 201,1 turn of the first axle body can be driven
It is dynamic, drive the different location of the top surface 111 of italic 11 to support card slot 332 by the rotation of the first axle body 1, make rope drum 3 around
External screw thread 21 is rotated and is translated, and then is realized wiring or put rope.
More firmly driving rope drum 3 rotation when as shown in FIG. 6 and 7, to rotate the first axle body 1, in this implementation
In example, italic 11 is in be symmetrically disposed on the first axle body 1.Specifically, card slot 332 is in " ten " font, and two italics 11 are right respectively
It being set to answering in two opposite notches, when the first axle body 1 rotates, two card slots 332 are supported in the top surface 111 of two italics 11 respectively,
To drive rope drum 3 to rotate.
Fig. 3 and Fig. 4 is please referred to, in the present embodiment, to be sheathed on the first axle body 1 and the second axle body 2 convenient for rope drum 3
On, rope drum 3 includes the first installation part 31, the second installation part 32 and the cylinder 33 in hollow structure 331, the first installation part 31 peace
One end of one end loaded on cylinder 33, the first axle body 1 through the first installation part 31 and is protruded into hollow structure 331, and card slot 332 is set
It being placed in cylinder 33, the second installation part 32 is installed on the other end of cylinder 33, and internal screw thread 321 is set in the second installation part 32,
One end of the second axle body 2 is placed through in the second installation part 32 and is pivotally connected with the first axle body 1.In order to guarantee to be located in rope drum 3
The structural stability of card slot 332, the cylinder 33 of rope drum 3 is interior to be equipped with the ribs 333 for reinforcing card slot 332.
Referring to Fig. 2, transmission mechanism 100 further includes pedestal 4, which is fixed in upper rail 301, and the first axle body 1 is pivotally connected
In one end of pedestal 4, the second axle body 2 is fixed on the other end of pedestal 4.
Since axial direction of the top surface 111 at a distance from the central axis of the first axle body 1 along the first axle body 1 of italic 11 gradually subtracts
It is few, as shown in fig. 7,332 Shi Qiyu the first axle body 1 of card slot is supported in the wherein position that L1 represents the top surface 111 of italic 11 in figure
Central axis distance, it is with first when card slot 332 is supported in the wherein another location for the top surface 111 that L2 represents italic 11 in figure
The distance of the central axis of axis body 1, L1 are greater than L2；The first axle body 1 rotates so that the top surface 111 of italic 11 support card slot 332 and
Drive rope drum 3 to rotate and during translating, when the top surface of italic 11 111 at a distance from the central axis of the first axle body 1 from
When L1 is changed to L2, the torque that rope drum 3 receives is gradually decreased, when the central axis of the top surface of italic 11 111 and the first axle body 1
Distance when being changed to L1 from L2, the torque that rope drum 3 receives is gradually increased.
In conjunction with Fig. 1 to Fig. 7, the opening of curtain 300 and the principle of contraction and process of the utility model are as follows:
When curtain 300 being needed to be unfolded, at this point, card slot 332 is located at the top surface 111 of italic 11 and the central axis of the first axle body 1
More lesser one end of linear distance (as shown in Figure 4), pulls down the lower rail 303 of curtain 300 with hand, and drawstring 302 is tight and downward fortune
Dynamic, under the driving of jack 201 and external force, the first axle body 1 is rotated, so that wiring is supported in the top surface 111 by italic 11
The card slot 332 of cylinder 3 simultaneously drives rope drum 3 to rotate, and since the internal screw thread of rope drum 3 321 and the external screw thread 21 of the second axle body 2 are nibbled
It closes, and the second axle body 2 is fixed, so that rope drum 3 opposite the first axle body 1 and the second axle body 2 while rotation translate,
So that rope drum 3 puts rope.As manpower is toward drop-down and the rotation and translation of rope drum 3, card slot 332 is from positioned at italic 11
Top surface 111 and the first axle body 1 central axis apart from lesser one end into the top surface of italic 11 111 and the first axle body 1
The biggish one end of mandrel linear distance is mobile (Fig. 5 illustrate during a state), at this point, the torque that is subject to of rope drum 3 by
It is cumulative big, like that, in the weight that jack 201 supports since blade 304 is in the case where gradually spreading out and gradually decrease, people
The pulling force of hand uses a constant force without increasing, to reach labour-saving purpose.Moreover, complete in curtain 300
When full expansion, manpower unclamps, and is not in the case where rebound is shunk due to manpower tensions constant.When needing curtain 300
When contraction, at this point, card slot 332 is located at the top surface 111 of italic 11 and the central axis of the first axle body 1 apart from biggish one end, use
Hand lifts the lower rail 303 of curtain 300 upwards, and under the driving of jack 201 and external force, the first axle body 1 is rotated, to pass through
The top surface 111 of italic 11 supports the card slot 332 of rope drum 3 and rope drum 3 is driven to rotate, and due to the internal screw thread of rope drum 3 321
It is engaged with the external screw thread 21 of the second axle body 2, and the second axle body 2 is fixed, so that rope drum 3 is opposite the while rotation
One axis body 1 and the second axle body 2 translate (state of rope drum 3 such as changes to Fig. 4 from Fig. 5), so that 3 wiring of rope drum.With
Manpower lift the rotation and translation of lower rail 303 and rope drum 3 upwards, card slot 332 is from the top surface 111 for being located at italic 11 and the
The central axis of one axis body 1 is smaller toward the top surface of italic 11 111 and the central axis distance of the first axle body 1 apart from biggish one end
One end it is mobile, at this point, the torque that rope drum 3 is subject to gradually decreases, like that, in the weight that jack 201 supports due to leaf
Gradually tapering up for piece 304 and in the case where being gradually increased, manpower lifts power without increasing, is using a constant force
Can, to reach labour-saving purpose.Moreover, manpower unclamps when curtain 300 is shunk completely, since to lift power constant for manpower, because
This is not in the case where gliding expansion.
In conclusion the first axle body 1 of the utility model supports the card slot of rope drum 3 by the top surface 111 of italic 11
332 come drive rope drum 3 rotate, due to italic 11 top surface 111 at a distance from the central axis of the first axle body 1 along the first axle body
1 axial direction gradually decreases, therefore passes through the stress of change rope drum 3 during rotation is driven to rope drum 3 by the first axle body 1
Torque, thus the pulling force of manpower and to lift power permanent during realizing drop-down expansion curtain 300 and during pop-up shrink curtains 300
It is fixed, without using increasing power, so that folding and being unfolded more labor-saving, convenient for curtain 300, and is not in curtain
The case where 300 rebounds and curtain 300 glide.Compared with the prior art scheme, the configuration of the present invention is simple, manufacturing cost is low, assembling
It is convenient, save built-up time and artificial, and long service life, technical requirements are low, are suitable for popularization and application.
Above disclosed is only the preferred embodiments of the utility model, and the power of the utility model cannot be limited with this
Sharp range, therefore equivalent variations made according to the claim of the utility model belong to the range that the utility model is covered.
Claims (10)
1. a kind of transmission mechanism, which is characterized in that including the first axle body, the second axle body and rope drum, the first axle body is convex
Equipped with italic, the top surface of the italic at a distance from the central axis of the first axle body along the axial direction of the first axle body gradually
It reducing, offers spiral helicine external screw thread on the second axle body, the first axle body is docked and is pivotally connected with the second axle body,
Card slot and internal screw thread are offered in the rope drum, the rope drum is sheathed on the first axle body and the second axle body,
And the internal screw thread in the rope drum is meshed with the external screw thread of the second axle body, the italic is slidably inserted into the card
In slot, the different location for the top surface for driving the italic by the rotation of the first axle body supports the card slot, makes described
Rope drum is rotated and is translated around the external screw thread.
2. transmission mechanism according to claim 1, which is characterized in that the italic structure triangular in shape, the triangle
The inclined-plane of structure is the top surface of the italic.
3. transmission mechanism according to claim 1, which is characterized in that the italic is in be symmetrically disposed on the first axle
On body.
4. transmission mechanism according to claim 1, which is characterized in that the card slot is in " ten " font.
5. transmission mechanism according to claim 1, which is characterized in that be equipped in the rope drum and reinforce adding for the card slot
Strong rib.
6. transmission mechanism according to claim 1, which is characterized in that the rope drum includes the first installation part, the second peace
Piece installing and cylinder in hollow structure, first installation part are installed on one end of the cylinder, one end of the first axle body
It through first installation part and protrudes into the hollow structure, the card slot is set in the cylinder, second installation
Part is installed on the other end of the cylinder, and the internal screw thread is set in second installation part, one end of the second axle body
It is placed through in second installation part and is pivotally connected with the first axle body.
7. transmission mechanism according to claim 1, which is characterized in that further include pedestal, the first axle body is articulated in institute
One end of pedestal is stated, the second axle body is fixed on the other end of the pedestal.
8. a kind of power box is used for curtain, which is characterized in that including jack, output shaft and such as any institute of claim 1-7
The transmission mechanism stated, the jack are connect by the output shaft with the first axle body.
9. power box according to claim 8, which is characterized in that one end of the first axle body, which is equipped with, supplies the output shaft
The socket of grafting.
10. a kind of curtain, including upper rail, drawstring and the mobilizable lower rail of the relatively described upper rail and multiple blades, feature exist
In further including the power box as described in claim 8 or 9 is any, the power box is set in the upper rail, the drawstring
One end is connected with the rope drum, and the other end of the drawstring is connected through the blade and the lower rail and with the lower rail,
Under the driving of external force and the power box, the drawstring is wrapped on the rope drum or is detached from from the rope drum, from
And realize folding or being unfolded for the blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821213058.4U CN209228294U (en) | 2018-07-27 | 2018-07-27 | Transmission mechanism, power box and curtain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821213058.4U CN209228294U (en) | 2018-07-27 | 2018-07-27 | Transmission mechanism, power box and curtain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209228294U true CN209228294U (en) | 2019-08-09 |
Family
ID=67497262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821213058.4U Expired - Fee Related CN209228294U (en) | 2018-07-27 | 2018-07-27 | Transmission mechanism, power box and curtain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209228294U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112227922A (en) * | 2020-11-19 | 2021-01-15 | 张艳霞 | Upper rail assembly and curtain |
-
2018
- 2018-07-27 CN CN201821213058.4U patent/CN209228294U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112227922A (en) * | 2020-11-19 | 2021-01-15 | 张艳霞 | Upper rail assembly and curtain |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106869744B (en) | Wiring mechanism, upper rail assembly and curtain | |
| TWM506880U (en) | Rope-less curtain winding device | |
| CN209228294U (en) | Transmission mechanism, power box and curtain | |
| CN210203645U (en) | Folding umbrella structure convenient to receive and release | |
| CN101230774B (en) | Lifting/lowering device of self-neutralization door and window | |
| CN109236161A (en) | Power Component and curtain | |
| CN221322222U (en) | Retracting mechanism of curtain without pull rope | |
| CN107719633A (en) | The wing and collapsible suspension formula aircraft of collapsible suspension formula aircraft | |
| CN215859906U (en) | Electric curtain winding structure | |
| CN207553931U (en) | A kind of boosting mechanism of hollow glass louver | |
| CN214616294U (en) | Upper rail assembly and curtain | |
| CN106996255B (en) | The curtain arrestment mechanism of curtain without stretching wire | |
| CN207484453U (en) | Dynamic compaction machinery | |
| CN206636467U (en) | Wiring mechanism, upper rail assembly and curtain | |
| JP3542739B2 (en) | Lifting device for shielding material | |
| CN207315193U (en) | Power Component and curtain | |
| CN213247293U (en) | Full-automatic umbrella of opening and shutting | |
| CN104832076B (en) | A kind of Cordless curtain | |
| CN201021595Y (en) | Lifting device for self balance door window | |
| TWI848759B (en) | No-string curtain retraction mechanism | |
| CN218909446U (en) | Fill electric pile cable fixed knot and construct | |
| CN221864930U (en) | Umbrella rope retracting mechanism and roman umbrella | |
| CN206043694U (en) | A kind of folding umbrella framework turns down automatic reset structure | |
| CN215332569U (en) | Improved structure of curtain | |
| CN205743642U (en) | Self-locking type stay cord curtain structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190809 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |