CN110657328A

CN110657328A - Turnover screen with double-motor drive

Info

Publication number: CN110657328A
Application number: CN201910964496.7A
Authority: CN
Inventors: 祝金焰; 邹旭方
Original assignee: HANGZHOU DESKMEDIA TECHNOLOGY Co Ltd
Current assignee: HANGZHOU DESKMEDIA TECHNOLOGY Co Ltd
Priority date: 2019-10-11
Filing date: 2019-10-11
Publication date: 2020-01-07

Abstract

The invention discloses a turnover screen with double-motor drive, which comprises a screen assembly, a transmission assembly and a drive assembly, wherein the drive assembly drives the screen assembly to turn back and forth through the transmission assembly; the driving assembly comprises two speed reducing motors, a damping shaft and a coupler, and the two speed reducing motors are used for driving the coupler to rotate; the two damping shafts are connected with the transmission assembly and drive the transmission assembly to rotate; the number of the couplers is three, and the couplers are respectively arranged between the two speed reducing motors and between each speed reducing motor and each damping shaft. The invention is convenient for manual operation and control, and can also be operated and controlled uniformly by the central control system, thereby having the characteristics of saving the internal space of the desktop, high automation degree and the like.

Description

Turnover screen with double-motor drive

Technical Field

The invention relates to the technical field of office appliances, in particular to a turnover screen with double motor drives.

Background

At present, with the development of digital technology, in order to fully display meeting contents, a projector and other modes are mostly adopted, but the display effect of the projector can generate adverse effects due to different projection environments, for example, when the distance from a projection position is far or near, the projection definition can be affected; when the meeting room is sufficiently illuminated, the projection definition is also affected. These circumstances can directly exert an influence to the meeting effect, so at present in order to enable the official working intellectuality, the multi-media machine with multiple functions integration walks into modern official working gradually, but present multi-media machine is in order to practice thrift desktop space environment, set up the display screen on the desktop, other part organism equipment then settle mostly inside the conference table, it is big to lead to occuping the desktop inner space, the loaded down with trivial details scheduling problem of circuit installation, and the display screen rises straight up and down, not only can influence user's the impression of watching, there is the inconvenient scheduling problem of accomodating after screen position changes or screen rotation angle produces the change simultaneously.

Disclosure of Invention

Technical problem to be solved

The invention aims to solve the problems that the angle of a lifting screen cannot be adjusted or is inconvenient to adjust when the lifting screen is used, and the top end of the lifting screen shakes when the lifting screen is adjusted.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme:

a turnover screen with double-motor drive comprises a screen assembly, a transmission assembly and a drive assembly, wherein the drive assembly drives the screen assembly to turn back and forth through the transmission assembly; the driving assembly comprises two speed reducing motors, a damping shaft and a coupler, and the two speed reducing motors are used for driving the coupler to rotate; the two damping shafts are connected with the transmission assembly and drive the transmission assembly to rotate; the number of the couplers is three, and the couplers are respectively arranged between the two speed reducing motors and between each speed reducing motor and each damping shaft.

Preferably, the coupling between the two speed reducing motors is a flexible coupling.

Preferably, when the gear motor drives the transmission assembly to rotate, the torque required by the rotation connecting rod to drive the rotation column is smaller than the rotation torque of the damping shaft.

Preferably, when the screen assembly is manually angled, the rotation link outputs a torque greater than a torque required to rotate the damping shaft, the rotational torque of the damping shaft being less than a torque of the motor.

Preferably, the screen assembly further comprises a control key and a controller, wherein the controller controls the speed reduction motor to rotate according to an input signal received from the control key, so that the screen assembly is turned back and forth.

Preferably, when the control key is continuously pressed, the controller controls the speed reducing motor to continuously rotate; when the control key is lifted, the controller controls the speed reducing motor to stop rotating.

Preferably, when the control key is lifted, the controller controls the reduction motor to stop rotating and to rotate reversely by a predetermined angle.

Preferably, the control keys comprise a first key and a second key, and the screen assembly is turned backwards when the first key is pressed; the screen assembly is flipped forward when the second key is pressed.

Preferably, the transmission assembly comprises a rotating column and a rotating connecting rod, and the rotating column is fixed with the lower end of the screen assembly.

Preferably, the far end of the damping shaft is hinged with the lower end of the transmission connecting rod through a first shaft wheel.

(III) advantageous effects

Based on the technical scheme, compared with the prior art, the turnover screen with the double-motor drive has the following advantages:

1. the lifting screen can be electrically turned and adjusted in angle, and can also be manually turned and adjusted in angle, and the mechanical structures of the screen and the lifter are not easy to damage due to external force applied to the lifter screen in the lifting and using process.

2. The lifting screen provided by the invention is characterized in that the screen shaking caused by gear gaps of the motors, installation gaps of parts and the like is eliminated by virtue of a flexible connection mode between the two motors and the motor reversing a preset angle.

Drawings

FIG. 1 is a schematic perspective view of an embodiment of the present invention, the view being viewed from the front;

FIG. 2 is a schematic perspective view of an embodiment of the present invention, viewed from above the side;

FIG. 3 is an enlarged schematic view of a portion of the transmission assembly of the embodiment of the present invention;

FIG. 4 is an enlarged schematic view of a driving assembly according to an embodiment of the present invention;

FIG. 5 is a block schematic diagram of the control function of the present invention.

10 screen assembly 20 rotating column

30-1 first rotating link 30-2 second rotating link

40-1 first gear motor 40-2 second gear motor

41-1 first motor support 41-2 second motor support

50-1 first coupling 50-2 second coupling

51 flexible coupling 70 control button

52-1 first damping shaft 52-2 second damping shaft

61-1 first upper arbor wheel 61-2 second upper arbor wheel

62-1 first lower sheave 62-2 second lower sheave

63-1 first flange bearing 63-2 second flange bearing

Detailed Description

In order that the objects, technical solutions and advantages of the present invention will become more apparent, the present invention will be further described in detail with reference to the accompanying drawings in conjunction with the following specific embodiments. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

The invention provides a turnover screen with double motor driving, and a lifting screen can be lifted relative to a desktop.

Fig. 1 and 2 are schematic perspective views of an embodiment of the present invention, fig. 1 being a view seen from the front and fig. 2 being a view seen from the side and above.

The lifting screen comprises a screen assembly, a transmission assembly and a driving assembly, wherein the driving assembly drives the screen assembly to turn over through the transmission assembly.

Generally, an opening may be formed in the desktop, and the lifting screen is placed into the opening and fixed to the desktop, so that when a user uses the lifting screen, the dual-motor driven flip screen transmission assembly and the dual-motor driven drive assembly are disposed below the desktop, and the screen assembly is disposed above the desktop. Typically, the drive assembly and the drive assembly are mounted within a housing that is secured to the lower portion of the table top or the open portion of the table top. Meanwhile, when the user does not need to use the elevating screen, the screen assembly may be lowered and received in the cabinet.

The raising and lowering of the screen assembly is effected by a corresponding lifting mechanism, for example by a lifting motor and a corresponding transmission mechanism. The invention can be realized by using the existing lifting mechanism, and the specific structure of the lifting mechanism is not described again. However, it should be noted that the transmission assembly and the driving assembly described in the present invention do not refer to an assembly structure for driving the screen assembly to ascend and descend in the elevating mechanism, but refer to a driving and transmission assembly for overturning the screen assembly.

As shown in fig. 1 and 2, in the present invention, the driving assembly and the driving assembly are integrally designed with the screen assembly to achieve simultaneous ascent and descent. I.e. it is a unitary structure driven together by the lifting mechanism.

Fig. 3 is an enlarged structural schematic diagram of a part of the transmission assembly of the embodiment of the invention, and fig. 4 is an enlarged structural schematic diagram of the driving assembly of the embodiment of the invention. As shown in fig. 3 and 4, the driving assembly includes a first gear motor 40-1, a second gear motor 40-2, a first damping shaft 52-1, a second damping shaft 52-2 and three couplings, including a first coupling 50-1, a second coupling 50-2 and a flexible coupling 51.

The transmission assembly comprises a first lower shaft wheel 62-1, a second lower shaft wheel 62-2, a first rotating connecting rod 30-1, a first rotating connecting rod 30-2, a first upper shaft wheel 61-1, a second upper shaft wheel 61-2 and a rotating column 20. When the first speed reducing motor 40-1 and the second speed reducing motor 40-2 are energized, the first coupling 50-1 and the second coupling 50-2 rotate, the first lower arbor wheel 62-1 and the second lower arbor wheel 62-2 are driven by the first damping shaft 52-1 and the second damping shaft 52-2, the first rotating connecting rod 30-1 and the second rotating connecting rod 30-2 and the first upper arbor wheel 61-1 and the second upper arbor wheel 61-2 are driven, the rotating column 20 rotates, and the screen assembly 10 is turned over back and forth.

Further, the transmission assembly further comprises a first flange bearing 63-1 and a second flange bearing 63-2, wherein the first flange bearing 63-1 and the second flange bearing 63-2 are respectively fixed at the hinged positions of the first rotating connecting rod 30-1 and the first upper shaft pulley 61-1 and the first lower shaft pulley 62-1, and the second rotating connecting rod 30-2 and the second upper shaft pulley 61-2 and the second lower shaft pulley 62-2. By fixing the flange bearing, the unfavorable friction resistance generated by the shaft wheel and the connecting rod during rotation is reduced.

For the sake of understanding, fig. 1 to 4 show the structural position relationship of this embodiment, in which the two side structures are symmetrical in space structure with the flexible coupling 51 as the midpoint. The left side of the flexible coupling 51 is sequentially provided with a first speed reducing motor 40-1, a first motor bracket 41-1, a first coupling 50-1, a first damping shaft 52-1, a first lower shaft wheel 62-1, a first rotating connecting rod 30-1, a first flange bearing 63-1 and a first upper shaft wheel 61-1; the right side of the flexible coupling 51 is sequentially provided with a second speed reducing motor 40-2, a second motor bracket 41-2, a second coupling 50-2, a second damping shaft 52-2, a second lower shaft wheel 62-2, a second rotating connecting rod 30-2, a second flange bearing 63-2 and a second upper shaft wheel 61-2. The coupling between the first speed reduction motor 40-1 and the second speed reduction motor 40-2 is a flexible coupling 51, and the flexible coupling 51 can generate elastic deformation when stressed, so that the effect of compensating gaps between the two shafts can be achieved.

When the first and second reduction motors 40-1 and 40-2 drive the transmission assembly to rotate, the torque required by the first and second rotating connecting rods 30-1 and 30-2 to drive the rotating column 20 is smaller than the rotating torque output by the first and second damping shafts 52-1 and 52-2. That is, the rotation of the two reduction motors inevitably drives the rotation of the rotation column.

When the manual adjustment of the angle of the screen assembly 10 is selected, the output torque of the first and second rotation links 30-1 and 30-2 is greater than the torque required to rotate the first and second damping shafts 50-1 and 50-2, and the rotation torque of the first and second damping shafts 50-1 and 50-2 is less than the torque required to rotate the first and second reduction motors 40-1 and 40-2. That is, when the screen assembly 10 is manually adjusted, the two ends of the first damping shaft 50-1 and the second damping shaft 50-2 rotate relatively, and the first speed reduction motor 40-1 and the second speed reduction motor 40-2 do not rotate, thereby protecting the motors.

FIG. 5 is a block schematic diagram of the control function of the present invention. The turnover screen with the dual-motor drive further comprises a control key 70 and a controller, wherein the controller has an independent program, and when a user executes different operation instructions through different control keys 70, the controller controls the motor to rotate according to input signals received from the control key 70 to drive the transmission drive assembly and the rotating assembly to turn the screen assembly 10 back and forth.

An arrangement of control keys of this embodiment is shown in fig. 2. As shown in fig. 2, the control key has a plurality of keys. Different keys may be configured to have different operational functions. However, in the present invention, the control keys 70 at least include a first key for controlling the screen assembly 10 to turn backward and a second key for controlling the screen assembly 10 to turn forward. The screen assembly 10 will flip backwards when the first key is pressed; when the second key is pressed, the screen assembly 10 turns forwards, and when the screen assembly 10 reaches a specified position, the turning is automatically stopped. When the control key is pressed continuously, the controller controls the speed reducing motor to rotate continuously according to different requirements of a user on the screen angle; when the control button 70 is lifted, the controller controls the speed reducing motor to stop rotating. The angle of the screen assembly 10 can be adjusted in such a way that when the screen assembly 10 is turned backwards to a fixed position by the first key, the screen assembly 10 can be continuously turned forwards by continuously pressing the second key, and after the screen assembly 10 reaches a specified angle, the turning of the screen assembly 10 can be stopped by lifting the second key. Such turning action is not limited to the turning angle of the screen assembly 10, and can be achieved by continuously pressing different control keys 70 to turn the screen assembly 10 back and forth, or by lifting the control key pressing type screen assembly 10 to stop turning.

More preferably, since the driving assembly has a gear meshing gap, the manufacturing dimensional deviation of the components and parts, the installation and matching of the transmission assembly, the first rotating link 30-1 and the second rotating link 30-2, etc. are accumulated with equal gaps, the screen assembly rotates around the bottom rotating column 20, and when the height of the screen assembly 10 is higher, the top end of the screen assembly 10 is more obviously shaken. Therefore, as a preferred embodiment, the flexible coupling 51 is adopted between the first speed reduction motor 40-1 and the second speed reduction motor 40-2, and when the controller detects that the key is changed from being pressed to being lifted, the controller controls the first speed reduction motor 40-1 and the second speed reduction motor 40-2 to rotate reversely for a predetermined angle after stopping rotating, so that no gap exists between the gears, the driving assembly and the transmission assembly in the first speed reduction motor 40-1 and the second speed reduction motor 40-2, the position of the screen assembly 10 is more stable, and the screen shaking phenomenon cannot occur.

As mentioned above, the turnover screen with double-motor drive provided by the invention is convenient for manual turnover, can realize electric control turnover through the controller, is convenient to operate and is stable. In addition, the multifunctional conference table is of an integrated structure, can be integrally installed on a customized table body to form a multifunctional conference table, a multifunctional office table and the like, and has the characteristics of free operation, desktop internal space saving, high automation degree and the like.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A turnover screen with double-motor drive comprises a screen assembly, a transmission assembly and a drive assembly, wherein the drive assembly drives the screen assembly to turn back and forth through the transmission assembly; the method is characterized in that:

the driving assembly comprises a speed reducing motor, a damping shaft and a coupling, wherein,

the two speed reducing motors are used for driving the shaft coupling to rotate;

the two damping shafts are connected with the transmission assembly and drive the transmission assembly to rotate;

the number of the couplers is three, and the couplers are respectively arranged between the two speed reducing motors and between each speed reducing motor and each damping shaft.

2. The flip screen with dual motor drive of claim 1, wherein the coupling between the two gearmotors is a flexible coupling.

3. The flip screen with dual motor drive of claim 1, wherein when said gear motor rotates said transmission assembly, the torque required to rotate the connecting rod to drive the rotating post is less than the torque required to rotate the damping shaft.

4. The flip screen with dual motor drive of claim 1, wherein when said screen assembly is manually angled, the rotating link outputs a torque greater than the torque required to rotate the damping shaft, the torque of the damping shaft being less than the torque of the motor.

5. The flip screen with dual motor drive of claim 1, further comprising a control button and a controller, wherein the controller controls the rotation of the reduction motor to flip the screen assembly back and forth according to an input signal received from the control button.

6. The flip screen with dual motor drive of claim 5, wherein when said control button is continuously pressed, the controller controls said reduction motor to continuously rotate; when the control key is lifted, the controller controls the speed reducing motor to stop rotating.

7. The flip screen with dual motor drive of claim 6, wherein when said control button is lifted, the controller controls said deceleration motor to stop rotating and to rotate reversely by a predetermined angle.

8. The flip screen with dual motor drive of claim 6, wherein the control keys comprise a first key and a second key, the screen assembly flipping backwards when the first key is pressed; the screen assembly is flipped forward when the second key is pressed.

9. The flip panel with dual motor drive of claim 1, wherein said transmission assembly comprises a rotation post and a rotation link, said rotation post being fixed to a lower end of said screen assembly.

10. The flip screen with dual motor drive of claim 9, wherein the damping shaft is hinged at a distal end by a lower pulley to a lower end of the drive link.