CN219958067U - Electric lifting projection screen - Google Patents
Electric lifting projection screen Download PDFInfo
- Publication number
- CN219958067U CN219958067U CN202320900609.9U CN202320900609U CN219958067U CN 219958067 U CN219958067 U CN 219958067U CN 202320900609 U CN202320900609 U CN 202320900609U CN 219958067 U CN219958067 U CN 219958067U
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- Prior art keywords
- pipe
- door plate
- projection screen
- projector box
- projector
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- 238000004804 winding Methods 0.000 claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 27
- 239000010959 steel Substances 0.000 claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 claims 1
- 239000000428 dust Substances 0.000 abstract description 5
- 230000013011 mating Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004883 computer application Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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- Overhead Projectors And Projection Screens (AREA)
Abstract
The utility model relates to an electric lifting projection screen, which comprises a projector box and a pipe rotating mechanism, wherein the projector box is of a shell structure with an opening at the bottom, a door plate is arranged at the opening at the bottom of the projector box in an openable manner, and the door plate is fixedly connected with a hanging groove; the tube rotating mechanism is arranged in the projector box, a wire winding wheel is fixedly sleeved at the output end of the tube rotating mechanism, a steel wire is wound on the surface of the wire winding wheel, and one end of the steel wire is fixedly connected with a matching tube; the bottom fixedly connected with curtain of cooperation pipe, the bottom fixedly connected with of curtain is parallel with the cooperation pipe down the pole, down pole fixedly connected with couple. According to the electric lifting projection screen, lifting and storage of the screen can be achieved through the pipe rotating mechanism, and the automatic opening and closing function of the door plate can be achieved through cooperation of the hooks and the door plate, so that dust can be prevented from entering the projector box when the projector box is not used.
Description
Technical Field
The utility model relates to the technical field of projection equipment, in particular to an electric lifting projection screen.
Background
With the popularization of computer applications, both work and life have tended to be electronic, and public places such as work and study often need to use projectors, and work files or video files in a computer can be put on a projection screen through the projectors for collective viewing, so that a sharing effect is achieved.
Because the projection screen is large, the screen is thick and heavy, so that the lifting mechanism of the projection screen has high load demand. In addition, the projection screen is rolled up in the box at top when not using, and is again spread downwards from the box when using, therefore, the through-hole is usually offered in its bottom to the common box in order to the rolling of curtain. However, as the bottom of the machine box is provided with the through hole, when the machine box is not used, dust is easily distributed on the curtain and devices inside the machine box for a long time, and the normal use of the machine box is affected.
Disclosure of Invention
Based on the above, the utility model aims to overcome the defects of the prior art, and provide an electric lifting projection screen, which can realize lifting and storage of the screen through a pipe rotating mechanism, and can realize the automatic opening and closing function of a door plate through the cooperation of a hook and the door plate so as to prevent the projector box from entering dust when not in use.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
an electrically powered overhead projector screen comprising:
the projector box is of a shell structure with an opening at the bottom, a door plate is arranged at the opening at the bottom of the projector box in an openable and closable manner, and the door plate is fixedly connected with a hanging groove;
the tube rotating mechanism is arranged in the projector box, a wire winding wheel is fixedly sleeved at the output end of the tube rotating mechanism, a steel wire is wound on the surface of the wire winding wheel, and one end of the steel wire is fixedly connected with a matching tube;
the bottom of the matching pipe is fixedly connected with a curtain, the bottom of the curtain is fixedly connected with a lower rod parallel to the matching pipe, and the lower rod is fixedly connected with a hook;
the pipe rotating mechanism is used for driving the wire winding wheel to rotate so that the wire winding wheel winds the steel wire; the hook on the lower rod is used for being matched with the hanging groove on the door plate so that the door plate can be arranged at the bottom opening of the projector box in an opening and closing mode.
As one embodiment, the pipe rotating mechanism comprises a motor, an inner rotating pipe and an outer rotating pipe; the motor is fixedly arranged in the projector box, the inner rotating pipe is rotatably arranged in the projector box, and the output end of the motor is in driving connection with the inner rotating pipe; the outer rotating pipe is rotatably arranged on the outer peripheral side of the inner rotating pipe.
As an implementation mode, a bearing assembly is arranged in the projector box, one end of the inner rotating pipe is rotatably arranged on the bearing assembly, and the other end of the inner rotating pipe is fixedly connected with the output end of the motor.
As one embodiment, a motor fixing plate is disposed inside the projector case, and the motor is fixedly mounted on the motor fixing plate.
As an implementation mode, the side wall of the outer rotating pipe is provided with a notch penetrating through the inner side and the outer side of the outer rotating pipe, the shape of the matching pipe is matched with the notch of the outer rotating pipe, when the motor drives the inner rotating pipe to rotate, the inner rotating pipe synchronously drives the winding wheel to rotate so as to roll up the steel wire, when the steel wire is rolled up to the position, abutting against the notch of the outer rotating pipe, the matching pipe is embedded with the notch of the outer rotating pipe, and when the motor continues to drive the inner rotating pipe to rotate, the outer rotating pipe can be driven to rotate so as to roll up the curtain.
As an implementation manner, a left bearing seat and a right bearing seat are respectively arranged in the projector box, and the outer rotating pipe is respectively and rotatably arranged in the left bearing seat and the right bearing seat.
As an implementation mode, the surface spacer sleeve of the inner rotating pipe is provided with two winding wheels, the two winding wheels are respectively wound with the steel wires, and the steel wires on the two winding wheels are fixedly connected with the matching pipe.
As an implementation mode, one end of the door plate is rotatably arranged at the opening of the projector box through a hinge, a groove is formed in the side wall of the door plate, a connecting rod is arranged in the groove, and the connecting rod and the groove jointly form the hanging groove.
When the lower rod is rolled into the projector box, the hanging groove of the door plate can be hooked by the hanging hook on the lower rod, so that the door plate covers the opening of the projector box.
As one embodiment, the projector case includes a housing, and a left end cover and a right end cover disposed at left and right sides of the housing.
Compared with the prior art, the electric lifting projection screen has the beneficial effects that:
according to the utility model, the asynchronous movement of the inner rotating pipe and the outer rotating pipe can realize the advanced lifting effect of the steel wire, so that the height position of the curtain is conveniently adjusted, the curtain is effectively stored, and the weight of the curtain and the load demand on the motor are reduced; in addition, the door plate is arranged at the bottom of the projector box in an openable and closable manner, and the hook on the lower rod is matched with the door plate for use in the folding and unfolding process of the curtain, so that the automatic folding and unfolding effect of the door plate can be realized, and the projector box can be prevented from entering dust when not used.
For a better understanding and implementation, the present utility model is described in detail below with reference to the drawings.
Drawings
FIG. 1 is a schematic view of an electric lifting projection screen according to the present utility model;
FIG. 2 is an enlarged schematic view of portion A of FIG. 1;
FIG. 3 is an exploded view of the motorized lift screen of the present utility model;
FIG. 4 is an exploded view of a projector case of the motorized lift screen of the present utility model;
FIG. 5 is a schematic view of an inner rotating tube of an electric lifting projection screen according to the present utility model;
FIG. 6 is a schematic diagram showing the engagement between the hooks and the slots of the motorized lift projection screen of the present utility model;
FIG. 7 is a schematic view of an electric lift projection screen with a door panel open;
fig. 8 is a schematic view of a door panel cover of an electric lifting projection screen according to the present utility model.
Wherein, the reference numerals of fig. 1 to 8 are explained as follows: 01. a left end cover; 02. a housing; 03. a right end cover; 04. a bearing assembly; 05. an outer rotating tube; 06. an inner rotating pipe; 07. a motor fixing plate; 08. a motor; 09. a steel wire; 10. a mating tube; 11. a curtain; 12. a lower rod; 13. a hook; 14. a door panel; 15. a reel; 16. a hanging groove; 17. and (3) a hinge.
Detailed Description
For further illustration of the various embodiments, the utility model is provided with the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments and together with the description, serve to explain the principles of the embodiments. With reference to these matters, one of ordinary skill in the art will understand other possible implementations and advantages of the present utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus are not to be construed as limiting the present utility model.
Referring to fig. 1 to 8, the present embodiment provides an electric lifting projection screen, which includes a projector box and a pipe rotating mechanism, wherein the projector box is a shell structure with an opening at the bottom, a door plate 14 is openably provided at the opening at the bottom of the projector box, and the door plate 14 is fixedly connected with a hanging slot 16; the tube rotating mechanism is arranged in the projector box, a wire winding wheel 15 is fixedly sleeved at the output end of the tube rotating mechanism, a steel wire 09 is wound on the surface of the wire winding wheel 15, and one end of the steel wire 09 is fixedly connected with a matching tube 10; the bottom of the matching pipe 10 is fixedly connected with a curtain 11, the bottom of the curtain 11 is fixedly connected with a lower rod 12 parallel to the matching pipe 10, and the lower rod 12 is fixedly connected with a hook 13; wherein, the pipe rotating mechanism is used for driving the winding wheel 15 to rotate so that the winding wheel 15 winds the steel wire 09; the hook 13 on the lower rod 12 is used to cooperate with the hanging slot 16 on the door plate 14 so that the door plate 14 can be arranged at the bottom opening of the projector case in an openable and closable manner.
The projector case of the embodiment has a rectangular parallelepiped housing structure, and includes a housing 02, and a left end cover 01 and a right end cover 03 disposed at left and right ends of the housing 02. Wherein, the bottom of the shell 02 is provided with an opening, and the door plate 14 is arranged at one side of the opening of the shell 02; in order to facilitate the storage of the mating tube 10, the opening width of the housing 02 of the present embodiment is larger than the width of the mating tube 10, so that the retraction of the mating tube 10 is unobstructed. In addition, the width of the door panel 14 of the present embodiment is greater than the opening width of the housing 02, so that when the door panel 14 covers the opening of the housing 02, the door panel 14 can completely cover the opening of the housing 02.
Specifically, the pipe rotating mechanism of the present embodiment includes a motor 08, an inner rotating pipe 06, and an outer rotating pipe 05; the motor 08 is fixedly arranged in the projector box, the inner rotating pipe 06 is rotatably arranged in the projector box, and the output end of the motor 08 is in driving connection with the inner rotating pipe 06; the outer rotary pipe 05 is rotatably provided on the outer peripheral side of the inner rotary pipe 06.
Wherein, the inside of projector box is provided with motor fixed plate 07, above-mentioned motor 08 fixed mounting is on this motor fixed plate 07. The bearing assembly 04 is disposed in the projector case, so that one end of the inner rotating pipe 06 of the embodiment is rotatably disposed on the bearing assembly 04, and the other end of the inner rotating pipe 06 is fixedly connected with the output end of the motor 08. Thus, the present embodiment can drive the inner rotary pipe 06 to rotate inside the projector case by the motor 08.
Further, two winding wheels 15 are sleeved on the surface of the inner rotating pipe 06 in a spacing manner, steel wires 09 are wound on the two winding wheels 15 respectively, and the steel wires 09 on the two winding wheels 15 are fixedly connected with the matching pipe 10. Therefore, the winding structure formed by the two winding wheels 15 and the two steel wires 09 can effectively ensure the stability of the curtain 11 in the winding and unwinding process.
Further, the projector case of the embodiment is provided with a left bearing seat and a right bearing seat inside, and the outer rotary tube 05 is rotatably disposed in the left bearing seat and the right bearing seat, respectively. In this embodiment, the side wall of the outer rotating tube 05 is provided with a notch penetrating the inner side and the outer side of the outer rotating tube, and the shape of the mating tube 10 is matched with the shape of the notch of the outer rotating tube 05, so when the motor 08 drives the inner rotating tube 06 to rotate, the inner rotating tube 06 synchronously drives the winding wheel 15 to rotate to wind up the steel wire 09, when the steel wire 09 is wound up to the position where the mating tube 10 abuts against the notch of the outer rotating tube 05, the mating tube 10 is engaged with the notch of the outer rotating tube 05, at this time, the mating tube 10 and the outer rotating tube 05 are mutually snapped, and when the motor 08 continues to drive the inner rotating tube 06 to rotate, the outer rotating tube 05 is driven to rotate by the mating tube 10 to wind up the curtain 11.
Optionally, the door panel 14 of the present embodiment is rotatably disposed at the opening of the projector case by a hinge 17, where the hinge 17 is a conventional rotational connection structure in the field, and the number of the hinges may be two or more. In addition, the side wall of the door panel 14 of the present embodiment is provided with a groove, and a link is disposed in the groove, so that the link and the groove of the present embodiment together form the hanging groove 16. Accordingly, the hook 13 of the present embodiment is a V-shaped hook structure, so that when the lower rod 12 is rolled into the projector box, the hook 13 on the lower rod 12 can hook the hanging slot 16 of the door plate 14 to cover the opening of the projector box with the door plate 14 to be determined.
Further, in order to make the closing of the door panel 14 more convenient, the door panel 14 of the present embodiment is provided with two hanging grooves 16, correspondingly, the lower rod 12 of the present embodiment is provided with two hooks 13, and the positions of the two hooks 13 are respectively matched with the positions of the two hanging grooves 16. When the projection screen needs to be used, the lower rod 12 drives the two hooks 13 to move downwards and separate from the two hanging grooves 16 on the door plate 14, and at this time, the door plate 14 can be opened under the action of gravity, so that the opening of the projector box is opened again, and the curtain 11 and the matching tube 10 can be conveniently lowered.
Compared with the prior art, the utility model can realize the advanced lifting effect of the steel wire 09 through the asynchronous movement of the inner rotating pipe 06 and the outer rotating pipe 05, is convenient for adjusting the height position of the curtain 11 and effectively accommodating the curtain 11, and reduces the weight of the curtain 11 and the load demand of the motor 08; in addition, the projection screen of the utility model can realize the automatic opening and closing effect of the door plate 14 by arranging the door plate 14 at the bottom of the projector box in an openable manner and matching the hook 13 on the lower rod 12 with the door plate 14 in the folding and unfolding process of the screen 11, so as to prevent the projector box from entering dust when not in use.
The above examples merely illustrate a few embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model in its motorized lift projection screens. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model.
Claims (10)
1. An electrically powered overhead projector screen, comprising:
the projector box is of a shell structure with an opening at the bottom, a door plate is arranged at the opening at the bottom of the projector box in an openable and closable manner, and the door plate is fixedly connected with a hanging groove;
the tube rotating mechanism is arranged in the projector box, a wire winding wheel is fixedly sleeved at the output end of the tube rotating mechanism, a steel wire is wound on the surface of the wire winding wheel, and one end of the steel wire is fixedly connected with a matching tube;
the bottom of the matching pipe is fixedly connected with a curtain, the bottom of the curtain is fixedly connected with a lower rod parallel to the matching pipe, and the lower rod is fixedly connected with a hook;
the pipe rotating mechanism is used for driving the wire winding wheel to rotate so that the wire winding wheel winds the steel wire; the hook on the lower rod is used for being matched with the hanging groove on the door plate so that the door plate can be arranged at the bottom opening of the projector box in an opening and closing mode.
2. The motorized lift projection screen of claim 1, wherein:
the pipe rotating mechanism comprises a motor, an inner rotating pipe and an outer rotating pipe; the motor is fixedly arranged in the projector box, the inner rotating pipe is rotatably arranged in the projector box, and the output end of the motor is in driving connection with the inner rotating pipe; the outer rotating pipe is rotatably arranged on the outer peripheral side of the inner rotating pipe.
3. The motorized lift projection screen of claim 2, wherein:
the inside of projector box is provided with the bearing assembly, the one end of inward rotation pipe rotationally set up in on the bearing assembly, the other end of inward rotation pipe with the output fixed connection of motor.
4. The motorized lift projection screen of claim 3, wherein:
the inside of projector box is provided with the motor fixed plate, motor fixed mounting is in on the motor fixed plate.
5. The motorized lift projection screen of claim 3, wherein:
the lateral wall of outer commentaries on classics pipe is provided with the breach that runs through its inside and outside, the shape of cooperation pipe with the breach of outer commentaries on classics pipe agrees with, works as motor drive when the commentaries on classics pipe rotates, the commentaries on classics pipe synchronous drive the reel rotates with the roll-up steel wire, works as the steel wire is rolled up to the cooperation pipe butt is in when the breach of outer commentaries on classics pipe, can be so that the cooperation pipe with the breach of outer commentaries on classics pipe is jogged mutually, the motor continues to drive when the commentaries on classics pipe rotates, can drive outer commentaries on classics pipe rotates with the roll-up the curtain.
6. The motorized lift projection screen of claim 5, wherein:
the inside of projector box is provided with left bearing frame and right bearing frame respectively, outer commentaries on classics pipe rotationally set up respectively in left bearing frame and right bearing frame.
7. The motorized lift projection screen of claim 2, wherein:
the surface spacer sleeve of the inner rotating pipe is provided with two winding wheels, the two winding wheels are respectively wound with the steel wires, and the steel wires on the two winding wheels are fixedly connected with the matching pipe.
8. The motorized lift projection screen of claim 1, wherein:
one end of the door plate is rotatably arranged at the opening of the projector box through a hinge, a groove is formed in the side wall of the door plate, a connecting rod is arranged in the groove, and the connecting rod and the groove jointly form the hanging groove.
9. The motorized lift projection screen of claim 8, wherein:
when the lower rod is rolled into the projector box, the hanging hooks on the lower rod can hook the hanging grooves of the door plate so that the door plate covers the opening of the projector box.
10. The motorized lift projection screen of claim 1, wherein:
the projector box comprises a shell, and a left end cover and a right end cover which are arranged on the left side and the right side of the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320900609.9U CN219958067U (en) | 2023-04-20 | 2023-04-20 | Electric lifting projection screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320900609.9U CN219958067U (en) | 2023-04-20 | 2023-04-20 | Electric lifting projection screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219958067U true CN219958067U (en) | 2023-11-03 |
Family
ID=88548574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320900609.9U Active CN219958067U (en) | 2023-04-20 | 2023-04-20 | Electric lifting projection screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219958067U (en) |
-
2023
- 2023-04-20 CN CN202320900609.9U patent/CN219958067U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |