CN212076055U

CN212076055U - Teaching projecting apparatus curtain coiling mechanism

Info

Publication number: CN212076055U
Application number: CN202020737722.6U
Authority: CN
Inventors: 李丹丹
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-08
Filing date: 2020-05-08
Publication date: 2020-12-04
Anticipated expiration: 2030-05-08

Abstract

The utility model provides a teaching projecting apparatus curtain coiling mechanism, including framework, curtain and controller, install first motor and second motor in the framework from top to bottom, the main shaft drive of first motor is connected with the wind-up roll, and the wind-up roll both ends articulate in the framework, and second motor drive is connected with supplementary roller set. The curtain top is connected on the wind-up roll, and the framework is stretched out to the curtain bottom, and the curtain passes and inconsistent with supplementary roller set from supplementary roller set. The controller is connected with the first motor, the second motor and the external power supply. When the curtain is rolled, the rotating speed of the first motor driving the rolling roller is greater than the rotating speed of the second motor driving the auxiliary roller, so that the rolling roller and the auxiliary roller have tension to the curtain, and the curtain is not easy to wrinkle during rolling. When the curtain is unfolded, the rotating speed of the second motor-driven auxiliary roller is greater than that of the first motor-driven winding roller, and the curtain can be smoothly unfolded.

Description

Teaching projecting apparatus curtain coiling mechanism

Technical Field

The utility model relates to a curtain for the projecting apparatus, especially teaching projecting apparatus curtain coiling mechanism.

Background

The projecting apparatus is as computer teaching auxiliary equipment more, need cooperate the curtain to use together. The projecting apparatus curtain is installed at classroom blackboard top more, expandes when using, needs to carry out the rolling after the use, can not influence the normal use of blackboard like this. The winding mode of projecting apparatus curtain has two kinds usually, and one kind is manual rolling, and the other kind is automatic rolling, and automatic collection curtain is convenient and fast more, also uses in more and more occasions. Curtain coiling mechanism's simple structure, present coiling mechanism are by single motor drive more, and the rolling to the curtain can be accomplished in motor drive wind-up roll corotation or reversal, is the winding state after the curtain rolling, and this material that also requires the curtain can not be too hard, will have better flexible elasticity, like this relapse the fine expansion of arbitrary ability after the rolling, and the plane finish degree after the expansion is high. When the single motor drive rolling curtain of current sampling, the curtain winding is not inseparable enough, sometimes the curtain can produce the fold after the rolling, influences the projected display effect like this when the curtain expandes once more. We think of adding a second motor that can tension the curtain to avoid the generation of wrinkles when the curtain is rolled.

SUMMERY OF THE UTILITY MODEL

The utility model provides a teaching projecting apparatus curtain coiling mechanism, the sampling double motor drive carries out the rolling or expandes, and the rotational speed difference of double motor drive live-rollers can realize that the curtain has certain tension when the rolling, can effectively avoid the curtain to produce the fold when the rolling.

The technical scheme of the utility model is realized like this: the curtain winding device for the teaching projector comprises a frame body, a curtain and a controller, and a first motor and a second motor which are vertically arranged in the frame body, wherein a main shaft of the first motor is connected with a winding roller in a driving manner, two ends of the winding roller are hinged to the frame body, and the second motor is connected with an auxiliary roller set in a driving manner; the top end of the curtain is connected to the wind-up roll, the bottom end of the curtain extends out of the frame body, and the curtain penetrates through the auxiliary roll set and is abutted against the auxiliary roll set; the auxiliary roller group comprises a pair of auxiliary rollers, the curtain penetrates through the pair of auxiliary rollers, two ends of each auxiliary roller are hinged to the frame body, and the end parts of the pair of auxiliary rollers are connected with a main shaft of a second motor through a gear set; the controller is connected with the first motor, the second motor and the external power supply.

The frame body comprises an L-shaped lower frame, an L-shaped upper frame, a front baffle plate and a front baffle plate, wherein the front baffle plate is blocked at the front side of the lower frame and the front side of the upper frame; the bottom surface of the lower frame is provided with a slotted hole, and the curtain passes through the slotted hole; the first motor and the second motor are respectively installed on the outer side of the upper frame.

The motor is characterized in that a first mounting plate and a second mounting plate which are vertically distributed are outwards arranged on one side of the upper frame, the first motor is fixed on the first mounting plate, and the second motor is mounted on the second mounting plate; the first motor and the second motor are covered by cover plates.

Furthermore, a plurality of step grooves are formed in the pair of auxiliary rollers.

The gear set comprises an auxiliary gear connected to the pair of auxiliary rollers and a driving gear connected to a main shaft of the second motor, the driving gear is meshed with the pair of auxiliary gears respectively, and the driving gear is located between the pair of auxiliary gears.

By adopting the technical scheme, the beneficial effects of the utility model are that:

the utility model discloses a teaching projecting apparatus curtain coiling mechanism, including framework, curtain and controller, install first motor and second motor in the framework from top to bottom, the main shaft drive of first motor is connected with the wind-up roll, and the wind-up roll both ends articulate in the framework, and second motor drive is connected with supplementary roller set. The curtain top is connected on the wind-up roll, and the framework is stretched out to the curtain bottom, and the curtain passes and inconsistent with supplementary roller set from supplementary roller set. The controller is connected with the first motor, the second motor and the external power supply. When the curtain is rolled, the rotating speed of the first motor driving the rolling roller is greater than the rotating speed of the second motor driving the auxiliary roller, so that the rolling roller and the auxiliary roller have tension to the curtain, and the curtain is not easy to wrinkle during rolling. When the curtain is unfolded, the rotating speed of the second motor-driven auxiliary roller is greater than that of the first motor-driven winding roller, and the curtain can be smoothly unfolded.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the split structure of the present invention;

wherein: 1. the device comprises a curtain, 2, a controller, 3, a first motor, 4, a second motor, 5, a winding roller, 6, an auxiliary roller, 7, a lower frame, 8, an upper frame, 9, a front baffle, 10, a slotted hole, 11, a first mounting plate, 12, a second mounting plate, 13, a cover plate, 14, a step groove, 15, an auxiliary gear and 16, a driving gear.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 and fig. 2, the utility model discloses a teaching projecting apparatus curtain coiling mechanism, including framework, curtain 1 and controller 2, install first motor 3 and second motor 4 in the framework from top to bottom, first motor 3's main shaft drive is connected with wind-up roll 5, and wind-up roll 5 both ends articulate in the framework, and second motor 4 drive is connected with the auxiliary roller group. The top of curtain 1 is connected on wind-up roll 5, and the framework is stretched out to curtain 1 bottom, and curtain 1 passes and inconsistent with supplementary roller set from supplementary roller set. The auxiliary roller group comprises a pair of auxiliary rollers 6, the curtain 1 penetrates through the pair of auxiliary rollers 6, two ends of each auxiliary roller 6 are hinged to the frame body, and the end parts of the pair of auxiliary rollers 6 are connected with a main shaft of the second motor 4 through a gear set. The controller 2 is connected with the first motor 3, the second motor 4 and the external power supply, and when the curtain 1 is rolled or unfolded, the controller 2 can control the rotating speed of the first motor 3 and the rotating speed of the second motor 4.

The frame body of the embodiment includes a lower frame 7 in an L shape and an upper frame 8 in an L shape, and a front baffle 9 which is stopped at the front side of the lower frame 7 and the upper frame 8. The bottom surface of the lower frame 7 is provided with a long slot 10, and the curtain 1 passes through the long slot 10. The first motor 3 and the second motor 4 are respectively installed outside the upper frame 8. Go up 8 one sides of frame and outwards be equipped with first mounting panel 11 and the second mounting panel 12 that distribute from top to bottom, first motor 3 is fixed on first mounting panel 11, and second motor 4 is installed on second mounting panel 12. The first motor 3 and the second motor 4 are also covered with a cover plate 13. The first motor 3 and the second motor 4 are arranged on one side of the frame body, and the assembly is convenient and fast.

The pair of auxiliary rollers 6 of this embodiment is provided with a plurality of step grooves 14, and the plurality of step grooves 14 can reduce the contact area between the auxiliary rollers 6 and the curtain 1, thereby preventing the curtain 1 from generating wrinkles during transmission between the pair of auxiliary rollers 6.

The gear set of the present embodiment includes an auxiliary gear 15 connected to the pair of auxiliary rollers 6 and a driving gear 16 connected to the main shaft of the second motor 4, the driving gear 16 is engaged with the pair of auxiliary gears 15, respectively, and the driving gear 16 is located between the pair of auxiliary gears 15. The second motor 4 can simultaneously drive the pair of auxiliary rollers 6 to rotate through the driving gear 16, the rotation directions of the pair of auxiliary rollers 6 are opposite, and the curtain 1 can be tightened when being wound or unfolded.

The utility model discloses a teaching projecting apparatus curtain coiling mechanism, when rolling curtain 1, the rotational speed of first motor 3 drive wind-up roll 5 is greater than the rotational speed of second motor 4 drive auxiliary roller 6, and wind-up roll 5 has the tensile force to curtain 1 with auxiliary roller 6 like this, is difficult for the fold during the rolling of curtain 1. When the curtain 1 is unfolded, the rotating speed of the auxiliary roller 6 driven by the second motor 4 is greater than that of the wind-up roller 5 driven by the first motor 3, and the curtain 1 can be smoothly unfolded.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The curtain winding device of the teaching projector is characterized by comprising a frame body, a curtain (1) and a controller (2), wherein a first motor (3) and a second motor (4) are vertically installed in the frame body, a main shaft of the first motor (3) is connected with a winding roller (5) in a driving mode, two ends of the winding roller (5) are hinged to the frame body, and the second motor (4) is connected with an auxiliary roller set in a driving mode; the top end of the curtain (1) is connected to the wind-up roll (5), the bottom end of the curtain (1) extends out of the frame body, and the curtain (1) penetrates through the auxiliary roll set and is abutted against the auxiliary roll set; the auxiliary roller set comprises a pair of auxiliary rollers (6), the curtain (1) penetrates through the pair of auxiliary rollers (6), two ends of each auxiliary roller (6) are hinged to the frame body, and the ends of the pair of auxiliary rollers (6) are connected with a main shaft of the second motor (4) through a gear set; the controller (2) is connected with the first motor (3), the second motor (4) and an external power supply.

2. The curtain winding device for the teaching projector as claimed in claim 1, wherein the frame body comprises an L-shaped lower frame (7) and an L-shaped upper frame (8), and a front baffle (9) blocking the lower frame (7) and the front side of the upper frame (8); a long slotted hole (10) is formed in the bottom surface of the lower frame (7), and the curtain (1) penetrates through the long slotted hole (10); the first motor (3) and the second motor (4) are respectively installed on the outer side of the upper frame (8).

3. The curtain winding device for the teaching projector as claimed in claim 2, wherein a first mounting plate (11) and a second mounting plate (12) are arranged on one side of the upper frame (8) outwards, the first mounting plate (11) and the second mounting plate (12) are vertically distributed, the first motor (3) is fixed on the first mounting plate (11), and the second motor (4) is mounted on the second mounting plate (12); and cover plates (13) are covered outside the first motor (3) and the second motor (4).

4. The curtain winding device for the teaching projector as claimed in claim 1, wherein a plurality of step grooves (14) are formed on the pair of auxiliary rollers (6).

5. The curtain winding device for the teaching projector as claimed in claim 1, wherein the gear set comprises an auxiliary gear (15) connected to the pair of auxiliary rollers (6) and a driving gear (16) connected to a main shaft of the second motor (4), the driving gear (16) is respectively engaged with the pair of auxiliary gears (15), and the driving gear (16) is located between the pair of auxiliary gears (15).