CN110924788A - Automatic opening and closing device for soft screen door - Google Patents
Automatic opening and closing device for soft screen door Download PDFInfo
- Publication number
- CN110924788A CN110924788A CN201911243958.2A CN201911243958A CN110924788A CN 110924788 A CN110924788 A CN 110924788A CN 201911243958 A CN201911243958 A CN 201911243958A CN 110924788 A CN110924788 A CN 110924788A
- Authority
- CN
- China
- Prior art keywords
- sliding block
- thread groove
- screen door
- handed thread
- soft screen
- 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.)
- Pending
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/60—Power-operated mechanisms for wings using electrical actuators
- E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
- E05F15/632—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for horizontally-sliding wings
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- 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
- E06B9/52—Devices affording protection against insects, e.g. fly screens; Mesh windows for other purposes
Abstract
The invention discloses an automatic opening and closing device for a soft screen door, which comprises a fixed frame fixed on a door frame, wherein a first strip-shaped hole and a second strip-shaped hole are respectively formed in two opposite sides of the fixed frame; a driving rod is rotatably arranged in the fixed frame; the driving rod is cylindrical, and a left-handed thread groove and a right-handed thread groove are formed in the driving rod; the first strip-shaped hole and the second strip-shaped hole are positioned on two sides of the driving rod; the cross sections of the left-handed thread groove and the right-handed thread groove are rectangular, and the left-handed thread groove and the right-handed thread groove have equal width; a first sliding block is arranged in the left-handed thread groove, the first sliding block is in a shuttle shape, and the length of the first sliding block is larger than the width of the right-handed thread groove. The driving rod with the left spiral groove and the right spiral groove on the surface is used for driving the soft screen door to open and close, and the soft screen door is small in size, attractive and long in service life.
Description
Technical Field
The present invention relates to an automatic opening and closing device, particularly to an automatic opening and closing device for a soft screen door used for opening and closing the screen door.
Background
The soft screen door is used for preventing mosquito, fly and dust in various places such as families, restaurants, hotels, offices, hospitals and the like. Traditional to open screen door adopts the people to open with the hand when passing through more, this kind of mode of opening influences user's comfort level, along with this problem of effectual solution of the emergence of the soft screen door of the progress automatic open close of science and technology, but the switching of current automatic open close screen door is many to be driven through eccentric wheel or stay cord, but uses the whole screen door of eccentric wheel bulky influence pleasing to the eye, and uses the stay cord to drive when using the back stay cord for the fracture for a long time.
Therefore, there is a need for an automatic screen door opening and closing device which is small in size, more attractive and longer in service life.
Disclosure of Invention
The invention aims to provide an automatic opening and closing device for a soft screen door, which aims to solve the defects in the prior art.
The invention provides an automatic opening and closing device for a soft screen door, which comprises a fixed frame fixed on a door frame, wherein a first strip-shaped hole and a second strip-shaped hole are respectively formed in two opposite sides of the fixed frame; a driving rod is rotatably mounted in the fixed frame; the driving rod is cylindrical, and a left-handed thread groove and a right-handed thread groove are formed in the driving rod; the first strip-shaped hole and the second strip-shaped hole are positioned on two sides of the driving rod;
the cross sections of the left-handed thread groove and the right-handed thread groove are rectangular, and the left-handed thread groove and the right-handed thread groove have equal width;
a first sliding block is arranged in the left-handed thread groove, the first sliding block is in a shuttle shape, and the length of the first sliding block is greater than the width of the right-handed thread groove; the first sliding block is connected with a first connecting rod penetrating through the first strip-shaped hole; the first connecting rod is arranged to be connected with the soft screen door;
a second sliding block is arranged in the right-handed thread groove, the second sliding block is in a shuttle shape, and the length of the second sliding block is greater than the width of the left-handed thread groove; the second slider is connected with a second connecting rod penetrating through the second strip-shaped hole; the second connecting rod is arranged to be connected with the soft screen door.
Further, the automatic opening and closing device further comprises a driving motor, the driving motor is connected with the driving rod, and the driving motor is used for driving the driving rod to rotate.
Further, the left-hand thread groove and the right-hand thread groove have equal thread pitches and equal turns.
Furthermore, the automatic soft screen door opening and closing device also comprises a third sliding block and a fourth sliding block;
the third sliding block is arranged on the outer surface of one side, provided with the first strip-shaped hole, of the fixed frame in a sliding manner, and is rotatably connected with the first connecting rod;
the fourth slider slides and sets up have on the fixed frame the surface of one side of second bar hole, the fourth slider with the second connecting rod rotates and is connected.
Furthermore, a first connecting plate is connected to the third sliding block, and one end, far away from the third sliding block, of the first connecting plate is connected with the soft screen door;
and a second connecting plate is connected to the fourth sliding block, and one end, far away from the fourth sliding block, of the second connecting plate is connected with the soft screen door.
Furthermore, the first connecting plate and the second connecting plate are both L-shaped plates;
the L-shaped plate comprises a first plate body and a second plate body, and the first plate body is parallel to the outer side surface of the fixing frame;
the second plate bodies are all parallel to the bottom surface of the fixed frame, and the second plate bodies are arranged to be respectively used for being connected with the two screen meshes of the soft screen door
Compared with the prior art, the driving rod with the left spiral groove and the right spiral groove on the surface is used for driving the soft screen door to open and close, the size is smaller and more attractive compared with the traditional method that the driving rod with the left spiral groove and the right spiral groove is used for driving the soft screen door to open and close, the traditional method that the pulling rope is used for controlling the soft screen door to open and close is simpler, and the pulling rope can be prevented from being broken due to abrasion after being used for a long time.
Drawings
FIG. 1 is a schematic structural view of an automatic opening and closing device for a soft screen door according to the present invention;
FIG. 2 is a front view of the automatic opening and closing apparatus for a soft screen door of the present invention;
FIG. 3 is a schematic view of the automatic opening and closing device for a soft screen door of the present invention from another view;
FIG. 4 is a schematic view of the mounting structure of the fixing frame and the second position-limiting strip;
FIG. 5 is a partial cross-sectional view of FIG. 4;
FIG. 6 is a schematic view of an installation structure of the third slider, the first connecting plate, the first connecting rod, and the first slider.
Description of reference numerals: 1-a fixed frame, 101-a first strip-shaped hole, 102-a second strip-shaped hole, 2-a driving rod, 201-a left-handed thread groove, 202-a right-handed thread groove, 3-a first slider, 4-a first connecting rod, 5-a third slider, 6-a fourth slider, 7-a first connecting plate, 8-a second connecting plate, 9-a first limiting strip, 901-a first sliding hole, 10-a second limiting strip, 1011-a second sliding hole and 103-a third strip-shaped hole.
Detailed Description
The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.
The embodiment of the invention comprises the following steps: as shown in fig. 1 to 6, the present invention provides an automatic opening and closing device for a soft screen door, which includes a fixing frame 1 fixed on a door frame, wherein a first strip-shaped hole 101 and a second strip-shaped hole 102 are respectively formed on two opposite sides of the fixing frame 1; a driving rod 2 is rotatably installed in the fixed frame 1; the driving rod 2 is cylindrical, and a left-handed thread groove 201 and a right-handed thread groove 202 are formed in the driving rod 2; the first strip-shaped hole 101 and the second strip-shaped hole 102 are located on both sides of the driving rod 2.
The cross sections of the left-handed thread groove 201 and the right-handed thread groove 202 are both rectangular, and the left-handed thread groove 201 and the right-handed thread groove 202 have the same width. So, set up on the one hand and can make manufacturing process simpler, on the other hand, can also make first slider 3 and second slider have the commonality, make the installation more convenient.
A first sliding block 3 is arranged in the left-handed thread groove 201, the first sliding block 3 is in a shuttle shape, and the length of the first sliding block 3 is greater than the width of the right-handed thread groove 202; a first connecting rod 4 penetrating through the first strip-shaped hole 101 is connected to the first sliding block 3; the first connecting rod 4 is arranged for connection with the soft screen door. In this way, the first sliding block 3 can drive the soft screen door to open or close.
A second sliding block is arranged in the right-handed thread groove 202, the second sliding block is in a shuttle shape, and the length of the second sliding block is greater than the width of the left-handed thread groove 201; the second slider is connected with a second connecting rod which penetrates through the second strip-shaped hole 102; the second connecting rod is arranged to be connected with the soft screen door.
During the use, with fixed frame 1 through bolt or screw horizontal fixed mounting on the last horizontal frame of door frame, be connected first connecting rod 4 with the upper end of a sash of screen cloth of soft screen door, the second connecting rod is connected with the upper end of another sash of screen cloth of soft screen door, through just rotating actuating lever 2 and driving first slider 3 along levogyration thread groove 201, the second slider moves to the middle part of actuating lever 2 with same speed from the both ends of drive 2 respectively along dextrorotation thread groove 202 and drives two sash of screen cloth removal of soft screen door, stop moving when moving the intermediate position of last horizontal frame, soft screen door closed this moment, when needs open soft screen door, the actuating lever 2 is rotated in reverse, first slider 3, the second slider removes to the switching that realizes soft screen door from the intermediate position of last horizontal frame to both sides. Compared with the traditional method of using an eccentric wheel to drive the soft screen door to open and close, the invention uses the driving rod 2 to have smaller volume and more beautiful appearance, has simpler operation of using a pull rope to control the opening and closing of the soft screen door, and can also avoid the breakage of the pull rope due to abrasion after long-time use.
Preferably, the automatic opening and closing device further comprises a driving motor, the driving motor is connected with the driving rod 2, and the driving motor is configured to drive the driving rod 2 to rotate. The driving rod 2 is conveniently driven by setting the driving motor, the rotating speed of the driving motor can be controlled to control the time required for opening or closing the soft screen door, and the number of turns of the driving motor is controlled to conveniently control the soft screen door to be opened or closed accurately. During the concrete implementation, driving motor can pass through the shaft coupling transmission with the one end of actuating lever 2 and be connected, and driving motor passes through the support to be fixed on fixed frame 1.
Preferably, the left-hand thread groove 201 and the right-hand thread groove 202 have an equal thread pitch and an equal number of turns. Therefore, when the driving rod 2 rotates, the moving distances of the first sliding block 3 and the second sliding block are equal. Preferably, the automatic soft screen door opening and closing device further comprises a third slider 5 and a fourth slider 6; the third slider 5 slides and sets up on fixed frame 1 has on the surface of one side of first bar hole 101, third slider 5 with first connecting rod 4 rotates and is connected.
The fourth sliding block 6 is slidably disposed on the outer surface of the side of the fixed frame 1 having the second bar-shaped hole 102, and the fourth sliding block 6 is rotatably connected to the second connecting rod.
The third sliding block 5 is connected with a first connecting plate 7, and one end, far away from the third sliding block 5, of the first connecting plate 7 is connected with the soft screen door.
And a second connecting plate 8 is connected to the fourth sliding block 6, and one end, far away from the fourth sliding block 6, of the second connecting plate 8 is connected with the soft screen door. The first connecting plate 7 and the second connecting plate 8 are both L-shaped plates.
The L-shaped plate comprises a first plate body and a second plate body, wherein the first plate body is parallel to the outer side surface of the fixing frame 1.
The two second plate bodies are parallel to the bottom surface of the fixed frame 1 and are respectively used for being connected with the two screen meshes of the soft screen door.
Through setting up first connecting plate 7, second connecting plate 8 can make two gauze of soft screen door when closed, can not lead to the great closure that can not be fine of distance between two gauze because first slider 3, second slider are located the both sides of fixed frame 1 respectively.
Preferably, two first limiting strips 9 are arranged on the outer surface of one side of the fixing frame 1 with the first strip-shaped hole 101; the two first limiting strips 9 are respectively positioned on two sides of the third sliding block 5 and are arranged along the length direction of the first strip-shaped hole 101; the first limiting strip 9 positioned below the third slider 5 is provided with a first sliding hole 901 along the length direction of the first strip-shaped hole 101; a first plate body of the L-shaped plate connected to the third slider 5 passes through the first slide hole 901 and is movable along the length direction of the first slide hole 901; two second limiting strips 10 are arranged on the outer surface of one side of the fixed frame 1 with the second strip-shaped holes 102; the two second limiting strips 10 are respectively positioned on two sides of the fourth sliding block 6 and are arranged along the length direction of the second strip-shaped hole 102; a second sliding hole 1011 is formed in the second limiting strip 10 located below the fourth sliding block 6 along the length direction of the second strip-shaped hole 102; the first plate body of the L-shaped plate connected to the fourth slider 6 passes through the second sliding hole 1011 and can be along the length direction of the second sliding hole 1011. Can play spacing effect to the slip of third slider 5, fourth slider 6 through setting up first spacing 9, the spacing strip of second 10 and make third slider 5 can remove along first bar hole 101, fourth slider 6 removes along second bar hole 102, and can not rotate at the in-process of removing.
Preferably, a third strip-shaped hole 103 is formed in the bottom surface of the fixed frame 1 along the length direction of the driving rod 2; the third strip-shaped hole 103 is located between the two L-shaped plates, and one end, away from the first plate, of the second plate of the L-shaped plate is located at the third strip-shaped hole 103; the upper ends of the two screen meshes of the soft screen door are slidably arranged in the third strip-shaped hole 103. In order to prevent the upper ends of the two fan gauze screens from slipping out of the third strip-shaped holes 103, a stop block can be arranged at the upper ends of the two fan gauze screens; the stopper is slidably connected to the third bar-shaped hole 103. Through setting up third bar hole 103 and can making the upper end of gauze be located fixed frame 1, make the upper end of fixed frame 1 and gauze not have the clearance when soft gauze door is closed, avoid the mosquito to fly into indoorly from the clearance, mosquito-proof worm effect is better.
The construction, features and functions of the present invention are described in detail in the embodiments illustrated in the drawings, which are only preferred embodiments of the present invention, but the present invention is not limited by the drawings, and all equivalent embodiments modified or changed according to the idea of the present invention should fall within the protection scope of the present invention without departing from the spirit of the present invention covered by the description and the drawings.
Claims (6)
1. The utility model provides an automatic switching device of soft screen door which characterized in that: the door frame fixing device comprises a fixing frame (1) fixed on a door frame, wherein a first strip-shaped hole (101) and a second strip-shaped hole (102) are respectively formed in two opposite sides of the fixing frame (1); a driving rod (2) is rotatably mounted in the fixed frame (1); the driving rod (2) is cylindrical, and a left-handed thread groove (201) and a right-handed thread groove (202) are formed in the driving rod (2); the first strip-shaped hole (101) and the second strip-shaped hole (102) are positioned on two sides of the driving rod (2);
the cross sections of the left-handed thread groove (201) and the right-handed thread groove (202) are rectangular, and the left-handed thread groove (201) and the right-handed thread groove (202) have the same width;
a first sliding block (3) is arranged in the left-handed thread groove (201), the first sliding block (3) is in a shuttle shape, and the length of the first sliding block (3) is greater than the width of the right-handed thread groove (202); a first connecting rod (4) penetrating through the first strip-shaped hole (101) is connected to the first sliding block (3); the first connecting rod (4) is arranged for connecting with the soft screen door;
a second sliding block is arranged in the right-handed thread groove (202), the second sliding block is in a shuttle shape, and the length of the second sliding block is greater than the width of the left-handed thread groove (201); the second sliding block is connected with a second connecting rod which penetrates through the second strip-shaped hole (102); the second connecting rod is arranged to be connected with the soft screen door.
2. The automatic opening and closing device for a soft screen door according to claim 1, wherein: the automatic opening and closing device further comprises a driving motor, the driving motor is connected with the driving rod (2), and the driving motor is used for driving the driving rod (2) to rotate.
3. The automatic opening and closing device for a soft screen door according to claim 1, wherein: the left-handed thread groove (201) and the right-handed thread groove (202) have equal thread pitches and equal turns.
4. The automatic opening and closing device for a soft screen door according to claim 1, wherein: the automatic soft screen door opening and closing device further comprises a third sliding block (5) and a fourth sliding block (6);
the third sliding block (5) is arranged on the outer surface of one side, provided with the first strip-shaped hole (101), of the fixed frame (1) in a sliding mode, and the third sliding block (5) is rotatably connected with the first connecting rod (4);
the fourth sliding block (6) is arranged on the outer surface of one side, provided with the second strip-shaped hole (102), of the fixed frame (1) in a sliding mode, and the fourth sliding block (6) is connected with the second connecting rod in a rotating mode.
5. The automatic opening and closing device for a soft screen door according to claim 4, wherein: a first connecting plate (7) is connected to the third sliding block (5), and one end, far away from the third sliding block (5), of the first connecting plate (7) is connected with the soft screen door;
and a second connecting plate (8) is connected to the fourth sliding block (6), and one end, far away from the fourth sliding block (6), of the second connecting plate (8) is connected with the soft screen door.
6. The automatic opening and closing device for a soft screen door according to claim 5, wherein: the first connecting plate (7) and the second connecting plate (8) are both L-shaped plates;
the L-shaped plate comprises a first plate body and a second plate body, and the first plate body is parallel to the outer side surface of the fixed frame (1);
the second plate bodies are all parallel to the bottom surface of the fixed frame (1), and the second plate bodies are arranged to be respectively used for being connected with the two screen meshes of the soft screen door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911243958.2A CN110924788A (en) | 2019-12-06 | 2019-12-06 | Automatic opening and closing device for soft screen door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911243958.2A CN110924788A (en) | 2019-12-06 | 2019-12-06 | Automatic opening and closing device for soft screen door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110924788A true CN110924788A (en) | 2020-03-27 |
Family
ID=69857470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911243958.2A Pending CN110924788A (en) | 2019-12-06 | 2019-12-06 | Automatic opening and closing device for soft screen door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110924788A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5899255A (en) * | 1995-12-19 | 1999-05-04 | Petracini; Orlando Arquimedes | Hanger and driving assembly for clothes or curtains |
| CN201189071Y (en) * | 2008-01-30 | 2009-02-04 | 施金成 | Vertical curtain |
| CN201194724Y (en) * | 2008-06-04 | 2009-02-18 | 王春梅 | Curtain rail |
| JP2011206147A (en) * | 2010-03-29 | 2011-10-20 | Kimijiro Kaneda | Curtain opening/closing device |
| CN103006027A (en) * | 2011-09-22 | 2013-04-03 | 王宜超 | Multifunctional curtain |
| CN203122017U (en) * | 2013-02-17 | 2013-08-14 | 杭州城锋五金制品有限公司 | Sliding groove type curtain rod |
| CN203531726U (en) * | 2013-09-27 | 2014-04-09 | 郑宇� | Novel anti-mosquito screen door |
| CN103876600A (en) * | 2012-12-22 | 2014-06-25 | 於友红 | Mosquito-proof window curtain |
| CN205840591U (en) * | 2016-06-28 | 2016-12-28 | 南京擎煜辉机械科技有限公司 | A kind of drive mechanism of the biparting stopping sliding door of passenger vehicle |
| CN108086887A (en) * | 2017-12-15 | 2018-05-29 | 利辛县飞亚强磁性软纱门有限公司 | A kind of electromagnetism Gauze portiere |
| CN208524487U (en) * | 2018-02-11 | 2019-02-22 | 浙江华尔特机电股份有限公司 | A kind of curtain/door curtain hanging device |
| CN209670866U (en) * | 2019-01-31 | 2019-11-22 | 武汉科技大学 | A kind of double door with yarn curtain |
-
2019
- 2019-12-06 CN CN201911243958.2A patent/CN110924788A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5899255A (en) * | 1995-12-19 | 1999-05-04 | Petracini; Orlando Arquimedes | Hanger and driving assembly for clothes or curtains |
| CN201189071Y (en) * | 2008-01-30 | 2009-02-04 | 施金成 | Vertical curtain |
| CN201194724Y (en) * | 2008-06-04 | 2009-02-18 | 王春梅 | Curtain rail |
| JP2011206147A (en) * | 2010-03-29 | 2011-10-20 | Kimijiro Kaneda | Curtain opening/closing device |
| CN103006027A (en) * | 2011-09-22 | 2013-04-03 | 王宜超 | Multifunctional curtain |
| CN103876600A (en) * | 2012-12-22 | 2014-06-25 | 於友红 | Mosquito-proof window curtain |
| CN203122017U (en) * | 2013-02-17 | 2013-08-14 | 杭州城锋五金制品有限公司 | Sliding groove type curtain rod |
| CN203531726U (en) * | 2013-09-27 | 2014-04-09 | 郑宇� | Novel anti-mosquito screen door |
| CN205840591U (en) * | 2016-06-28 | 2016-12-28 | 南京擎煜辉机械科技有限公司 | A kind of drive mechanism of the biparting stopping sliding door of passenger vehicle |
| CN108086887A (en) * | 2017-12-15 | 2018-05-29 | 利辛县飞亚强磁性软纱门有限公司 | A kind of electromagnetism Gauze portiere |
| CN208524487U (en) * | 2018-02-11 | 2019-02-22 | 浙江华尔特机电股份有限公司 | A kind of curtain/door curtain hanging device |
| CN209670866U (en) * | 2019-01-31 | 2019-11-22 | 武汉科技大学 | A kind of double door with yarn curtain |
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Application publication date: 20200327 |
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