CN209821584U - Projection screen cloth coiling mechanism for computer teaching - Google Patents
Projection screen cloth coiling mechanism for computer teaching Download PDFInfo
- Publication number
- CN209821584U CN209821584U CN201921033057.6U CN201921033057U CN209821584U CN 209821584 U CN209821584 U CN 209821584U CN 201921033057 U CN201921033057 U CN 201921033057U CN 209821584 U CN209821584 U CN 209821584U
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- connecting rod
- curtain
- shell
- rod
- spring
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Abstract
The utility model discloses a projection screen cloth rolling device for computer teaching, which comprises an upper shell, a first nut seat, a first screw rod, a first connecting rod, a motor, a second screw rod, a second connecting rod, a second nut seat, a screen shell, a screen cloth, a coil spring, a winding shaft, a third connecting rod, a lower shell, a second sliding block, a second transverse rod, a second spring, a fourth connecting rod, a fixed block, a first transverse rod, a first spring and a first sliding block; the utility model has the advantages of reasonable and simple structure, low production cost, convenient installation and complete functions, when the lower shell drives the curtain to move down to the bottom, the curtain is completely opened for use, and because the lower side of the curtain is fixed on the lower shell and the upper side is fixed on the winding shaft, the curtain is ensured to be in a tight state, and the phenomenon of shaking can not occur; the utility model discloses in the wind spring that sets up, can twine the curtain again and collect on the winding axle when the casing shifts up down to the effect of use has been improved.
Description
The technical field is as follows:
the utility model relates to a coiling mechanism, in particular to projection curtain cloth coiling mechanism for computer teaching.
Background art:
the computer is commonly called computer, is an electronic computer for high-speed calculation, can perform numerical calculation and logic calculation, and also has the function of storage and memory. The intelligent electronic device can be operated according to a program, and can automatically process mass data at a high speed. A computer that is composed of a hardware system and a software system and does not have any software installed is called a bare metal. The computer can be divided into a super computer, an industrial control computer, a network computer, a personal computer and an embedded computer, and more advanced computers comprise a biological computer, a photon computer, a quantum computer and the like.
In the computer teaching process, a projection mode is needed to transmit teaching contents, a curtain is needed for projection, the curtain needs to be rolled up or released for many times in the teaching process, the existing curtain is supported by a bracket, so that the curtain is easy to shake unstably, and the curtain needs to be manually operated to ascend and descend, so that inconvenience is caused; meanwhile, the support is generally fixedly mounted on a wall top or a wall, so that the support is inconvenient to move and limited in application range.
The utility model has the following contents:
the utility model aims at providing a projection curtain cloth coiling mechanism for computer teaching in order to solve above-mentioned problem, solved the problem among the background art.
In order to solve the above problem, the utility model provides a technical scheme: the utility model provides a computer teaching is with projection curtain coiling mechanism which innovation point lies in: the curtain comprises an upper shell, a first nut seat, a first screw, a first connecting rod, a motor, a second screw, a second connecting rod, a second nut seat, a curtain shell, a curtain, a coil spring, a winding shaft, a third connecting rod, a lower shell, a second sliding block, a second transverse rod, a second spring, a fourth connecting rod, a fixed block, a first transverse rod, a first spring and a first sliding block; the motor is fixedly connected to the center inside the upper shell, and a screw rod II and a screw rod I are fixedly connected to the left output shaft end and the right output shaft end of the motor respectively; the first nut seat is transversely and movably connected to the right side in the upper shell, a transverse threaded hole in the upper side of the first nut seat is movably connected to the first screw rod, and the lower side of the first nut seat is hinged to the upper side of the first connecting rod; the nut seat II is transversely and movably connected to the left side in the upper shell, a transverse threaded hole in the upper side of the nut seat II is movably connected to the screw rod II, the lower side of the nut seat II is hinged to the upper side of the connecting rod II, and the center of the connecting rod II is movably connected with the connecting rod I; the curtain shell is fixedly connected to the front side of the outer part of the upper shell, and a winding shaft is movably connected to the inner part of the curtain shell; the left side and the right side of the winding shaft are both fixedly connected with coil springs, and the outer side ends of the coil springs are both fixedly connected with the inner wall of the curtain shell; the upper side of the curtain is wound and connected on the winding shaft, and the lower side end part of the curtain is fixedly connected on the front surface of the lower shell; a fixed block is fixedly connected to the center inside the lower shell; a second cross rod is fixedly connected between the left side of the fixed block and the left side of the inner part of the lower shell, and a first cross rod is fixedly connected between the right side of the fixed block and the right side of the inner part of the lower shell; the inner part of the lower side of the second sliding block is movably connected to the second cross rod, a second spring is arranged between the right side surface of the second sliding block and the left side surface of the fixed block, the upper side of the second sliding block is hinged with the lower side of the fourth connecting rod, and the upper side of the fourth connecting rod is hinged with the lower side of the second connecting rod; the inner part of the lower side of the first sliding block is transversely and movably connected to the first cross rod, a first spring is arranged between the left side surface of the first sliding block and the right side surface of the fixed block, and the upper side of the first sliding block is hinged to the lower side of the third connecting rod; the upper side of the third connecting rod is hinged with the lower side of the connecting rod, and the center of the third connecting rod is movably connected with the center of the fourth connecting rod.
Preferably, the first screw is a left-handed screw.
Preferably, the second screw is a right-handed screw.
Preferably, the lengths of the first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod are the same.
Preferably, the inner side of the second spring is positioned at the outer side of the second cross rod.
Preferably, an inner side of the spring is located at an outer side of the cross bar.
The utility model has the advantages that:
(1) the utility model has the advantages of reasonable and simple structure, low in production cost, simple to operate, it is multiple functional, the curtain is then opened completely when the casing drives the curtain and moves down on the ground and uses down, because the curtain downside is fixed on the casing down this moment, and the upside is fixed on the winding shaft to guaranteed that the curtain is in the phenomenon that the state of tightening just can not appear rocking yet.
(2) The utility model discloses in the wind spring that sets up, can twine the curtain again and collect on the winding axle when the casing shifts up down to the effect of use has been improved.
(3) The utility model discloses well spring two and the spring one that sets up can ensure down that the casing is in central point all the time and reciprocates to stability and reliability when having improved the use.
Description of the drawings:
for ease of illustration, the invention is described in detail by the following detailed description and accompanying drawings.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the local connection of the present invention.
1-an upper shell; 2-a first nut seat; 3, a first screw; 4, connecting the first rod; 5, a motor; 6-screw rod II; 7-connecting rod two; 8-a nut seat II; 9-curtain housing; 10-curtain; 11-a coil spring; 12-a winding shaft; 13-connecting rod three; 14-a lower shell; 15-a second sliding block; 16-a second cross bar; 17-spring two; 18-link four; 19-fixing block; 20-cross bar one; 21-spring one; 22-first slide block.
The specific implementation mode is as follows:
as shown in fig. 1 and fig. 2, the following technical solutions are adopted in the present embodiment: a projection screen cloth winding device for computer teaching comprises an upper shell 1, a first nut seat 2, a first screw rod 3, a first connecting rod 4, a motor 5, a second screw rod 6, a second connecting rod 7, a second nut seat 8, a screen shell 9, a screen 10, a coil spring 11, a winding shaft 12, a third connecting rod 13, a lower shell 14, a second sliding block 15, a second cross rod 16, a second spring 17, a fourth connecting rod 18, a fixed block 19, a first cross rod 20, a first spring 21 and a first sliding block 22; the motor 5 is fixedly connected to the center inside the upper shell 1, and a screw rod II 6 and a screw rod I3 are fixedly connected to the left output shaft end and the right output shaft end of the motor 5 respectively; the nut seat I2 is transversely and movably connected to the right side in the upper shell 1, a transverse threaded hole in the upper side of the nut seat I2 is movably connected to the screw rod I3, and the lower side of the nut seat I2 is hinged to the upper side of the connecting rod I4; the second nut seat 8 is transversely and movably connected to the left side inside the upper shell 1, a transverse threaded hole in the upper side of the second nut seat 8 is movably connected to the second screw rod 6, the lower side of the second nut seat 8 is hinged to the upper side of the second connecting rod 7, and the center of the second connecting rod 7 is movably connected with the first connecting rod 4; the curtain shell 9 is fixedly connected to the front side of the outer part of the upper shell 1, and a winding shaft 12 is movably connected to the inner part of the curtain shell 9; the left side and the right side of the winding shaft 12 are both fixedly connected with coil springs 11, and the outer side ends of the coil springs 11 are both fixedly connected with the inner wall of the curtain shell 9; the upper side of the curtain 10 is wound and connected on a winding shaft 12, and the lower side end part of the curtain 10 is fixedly connected on the front surface of a lower shell 14; a fixed block 19 is fixedly connected to the center inside the lower shell 14; a second cross rod 16 is fixedly connected between the left side of the fixed block 19 and the left side of the interior of the lower shell 14, and a first cross rod 20 is fixedly connected between the right side of the fixed block 19 and the right side of the interior of the lower shell 14; the inner part of the lower side of the second sliding block 15 is movably connected to the second cross rod 16, a second spring 17 is arranged between the right side surface of the second sliding block 15 and the left side surface of the fixed block 19, the upper side of the second sliding block 15 is hinged to the lower side of the fourth connecting rod 18, and the upper side of the fourth connecting rod 18 is hinged to the lower side of the second connecting rod 7; the inner part of the lower side of the first sliding block 22 is transversely and movably connected to the first cross rod 20, a first spring 21 is arranged between the left side surface of the first sliding block 22 and the right side surface of the fixed block 19, and the upper side of the first sliding block 22 is hinged to the lower side of the third connecting rod 13; the upper side of the third connecting rod 13 is hinged with the lower side of the first connecting rod 4, and the center of the third connecting rod 13 is movably connected with the center of the fourth connecting rod 18.
Wherein the first screw 3 is a left-handed screw; the second screw 6 is a right-handed screw; the lengths of the first connecting rod 4, the second connecting rod 7, the third connecting rod 13 and the fourth connecting rod 18 are the same; the inner side of the second spring 17 is positioned on the outer side of the second cross rod 16; the inner side of the spring I21 is positioned at the outer side of the cross rod I20.
The utility model discloses a user state does: the utility model has the advantages of reasonable and simple structure, low production cost, convenient installation and complete functions, when in use, firstly, the motor 5 is started to drive the screw rod I3 and the screw rod II 6 to rotate together, and the screw rod I3 and the screw rod II 6 rotate together to drive the nut seat I2 and the nut seat II 8 to move together towards the inner side or the outer side simultaneously, so that the lower shell 14 is driven by the connecting rod mechanism to drive the end part of the lower side of the curtain 10 to move up and down, when the lower shell 14 drives the curtain 10 to move down to the bottom, the curtain 10 is completely opened for use, because the lower side of the curtain 10 is fixed on the lower shell 14 and the upper side is fixed on the winding shaft 12, the curtain 10 is ensured to be in a tight state, the shaking phenomenon can not occur, and the arranged coil spring 11 can rewind the curtain 10 onto the winding shaft 12 to collect when the lower shell 14 moves up, thereby improving the use effect, the spring II 17 and the spring I21 are additionally arranged, so that the lower shell 14 can be always in the central position to move up and down, and the stability and the reliability in use are improved.
The utility model discloses a control mode is controlled through artifical start-up and closing switch, and the wiring diagram of power component and the supply of power belong to the common general knowledge in this field, and the utility model discloses mainly be used for protecting mechanical device, so the utility model discloses no longer explain control mode and wiring in detail and arrange.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above, and it should be understood by those skilled in the art that the present invention is not limited by the above embodiments, which are only illustrative, but also various changes and modifications may be made without departing from the spirit and scope of the present invention, which fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.
Claims (6)
1. The utility model provides a projection curtain coiling mechanism for computer teaching which characterized in that: the curtain comprises an upper shell (1), a first nut seat (2), a first screw (3), a first connecting rod (4), a motor (5), a second screw (6), a second connecting rod (7), a second nut seat (8), a curtain shell (9), a curtain (10), a coil spring (11), a winding shaft (12), a third connecting rod (13), a lower shell (14), a second sliding block (15), a second cross rod (16), a second spring (17), a fourth connecting rod (18), a fixed block (19), a first cross rod (20), a first spring (21) and a first sliding block (22);
the motor (5) is fixedly connected to the center inside the upper shell (1), and a screw rod II (6) and a screw rod I (3) are fixedly connected to the left output shaft end and the right output shaft end of the motor (5) respectively;
the first nut seat (2) is transversely and movably connected to the right side in the upper shell (1), a transverse threaded hole in the upper side of the first nut seat (2) is movably connected to the first screw rod (3), and the lower side of the first nut seat (2) is hinged to the upper side of the first connecting rod (4);
the second nut seat (8) is transversely and movably connected to the left side inside the upper shell (1), a transverse threaded hole in the upper side of the second nut seat (8) is movably connected to the second screw rod (6), the lower side of the second nut seat (8) is hinged to the upper side of the second connecting rod (7), and the center of the second connecting rod (7) is movably connected with the first connecting rod (4);
the curtain shell (9) is fixedly connected to the front surface of the outer part of the upper shell (1), and a winding shaft (12) is movably connected to the inner part of the curtain shell (9);
the left side and the right side of the winding shaft (12) are both fixedly connected with coil springs (11), and the outer side ends of the coil springs (11) are both fixedly connected with the inner wall of the curtain shell (9);
the upper side of the curtain (10) is wound and connected on the winding shaft (12), and the lower side end part of the curtain (10) is fixedly connected on the front surface of the lower shell (14);
a fixed block (19) is fixedly connected to the center inside the lower shell (14);
a second cross rod (16) is fixedly connected between the left side of the fixed block (19) and the left side of the interior of the lower shell (14), and a first cross rod (20) is fixedly connected between the right side of the fixed block (19) and the right side of the interior of the lower shell (14);
the inner part of the lower side of the second sliding block (15) is movably connected to the second cross rod (16), a second spring (17) is arranged between the right side surface of the second sliding block (15) and the left side surface of the fixed block (19), the upper side of the second sliding block (15) is hinged to the lower side of the fourth connecting rod (18), and the upper side of the fourth connecting rod (18) is hinged to the lower side of the second connecting rod (7);
the inner part of the lower side of the first sliding block (22) is transversely and movably connected to the first cross rod (20), a first spring (21) is arranged between the left side surface of the first sliding block (22) and the right side surface of the fixed block (19), and the upper side of the first sliding block (22) is hinged to the lower side of the third connecting rod (13);
the upper side of the third connecting rod (13) is hinged with the lower side of the first connecting rod (4), and the center of the third connecting rod (13) is movably connected with the center of the fourth connecting rod (18).
2. The projection screen cloth winding device for computer teaching according to claim 1, characterized in that: the first screw (3) is a left-handed screw.
3. The projection screen cloth winding device for computer teaching according to claim 1, characterized in that: the second screw (6) is a right-handed screw.
4. The projection screen cloth winding device for computer teaching according to claim 1, characterized in that: the length of the first connecting rod (4), the length of the second connecting rod (7), the length of the third connecting rod (13) and the length of the fourth connecting rod (18) are the same.
5. The projection screen cloth winding device for computer teaching according to claim 1, characterized in that: the inner side of the second spring (17) is positioned at the outer side of the second cross rod (16).
6. The projection screen cloth winding device for computer teaching according to claim 1, characterized in that: the inner side of the first spring (21) is positioned at the outer side of the first cross rod (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921033057.6U CN209821584U (en) | 2019-07-04 | 2019-07-04 | Projection screen cloth coiling mechanism for computer teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921033057.6U CN209821584U (en) | 2019-07-04 | 2019-07-04 | Projection screen cloth coiling mechanism for computer teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209821584U true CN209821584U (en) | 2019-12-20 |
Family
ID=68885291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921033057.6U Expired - Fee Related CN209821584U (en) | 2019-07-04 | 2019-07-04 | Projection screen cloth coiling mechanism for computer teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209821584U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111554131A (en) * | 2020-05-07 | 2020-08-18 | 杨刚华 | Demonstration courseware for enhancing understanding ability of students to language abstract concepts |
-
2019
- 2019-07-04 CN CN201921033057.6U patent/CN209821584U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111554131A (en) * | 2020-05-07 | 2020-08-18 | 杨刚华 | Demonstration courseware for enhancing understanding ability of students to language abstract concepts |
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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: 20191220 Termination date: 20200704 |
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| CF01 | Termination of patent right due to non-payment of annual fee |