CN220584539U - Ground lifting projection screen - Google Patents
Ground lifting projection screen Download PDFInfo
- Publication number
- CN220584539U CN220584539U CN202322227445.0U CN202322227445U CN220584539U CN 220584539 U CN220584539 U CN 220584539U CN 202322227445 U CN202322227445 U CN 202322227445U CN 220584539 U CN220584539 U CN 220584539U
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- arm rod
- bottom box
- curtain
- lower arm
- rotatably arranged
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 238000005096 rolling process Methods 0.000 claims abstract description 16
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims 2
- 230000009471 action Effects 0.000 abstract description 5
- 238000004804 winding Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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- Curtains And Furnishings For Windows Or Doors (AREA)
Abstract
The utility model relates to a ground lifting projection screen, which comprises a projection bottom box, a rolling mechanism, a screen, an upper cover and a support arm, wherein the projection bottom box is arranged on the projection bottom box; the rolling mechanism is rotatably arranged on the projection bottom box and is used for rolling the curtain, and the tail end of the curtain is fixedly connected with the upper cover; the support arm comprises an upper arm rod, a joint shaft, a lower arm rod and a steel wire rope, wherein the upper arm rod is rotatably connected with the lower arm rod through the joint shaft, the tail end of the upper arm rod is rotatably arranged on the upper cover, and the tail end of the lower arm rod is rotatably arranged on the projection bottom box; the lower arm rod is internally provided with a tension spring, one end of the steel wire rope is fixed in the upper arm rod, and the other end of the steel wire rope penetrates through the joint shaft and is connected with the tension spring. According to the ground lifting projection screen, the upper cover is lifted and opened while the screen is opened and closed by the action between the steel wire rope and the tension spring in the support arm and the driving of the winding mechanism.
Description
Technical Field
The utility model relates to the technical field of projection screens, in particular to a ground lifting projection screen.
Background
The projection screen is one of the most commonly used products in the peripheral equipment of the projector, is used with the projector and receives the light beam projected by the projector to realize the picture display, is an indispensable part of the projection system, is increasingly applied to the projection equipment in the work and the life of people along with the development of technology, and has higher requirements on the projection screen. The traditional projection curtain structure is usually suspended and wall-hung, is generally fixed at a specific position for use, cannot be moved for use, has large limitation, occupies space and is inconvenient to carry and transport.
Disclosure of Invention
Based on the above, the utility model aims to overcome the defects of the prior art, and provides the ground lifting projection screen, which can be stored and carried conveniently through the cooperation of the projection bottom box and the upper cover, and can be driven by the cooperation of the rolling mechanism through the action between the steel wire rope inside the supporting arm and the tension spring, so that the upper cover can be lifted and closed simultaneously.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
a ground lifting projection screen comprises a projection bottom box, a rolling mechanism, a screen, an upper cover and a support arm; the rolling mechanism is rotatably arranged on the projection bottom box and is used for rolling the curtain, and the tail end of the curtain is fixedly connected with the upper cover; the support arm comprises an upper arm rod, a joint shaft, a lower arm rod and a steel wire rope, wherein the upper arm rod is rotatably connected with the lower arm rod through the joint shaft, the tail end of the upper arm rod is rotatably arranged on the upper cover, and the tail end of the lower arm rod is rotatably arranged on the projection bottom box; the lower arm rod is internally provided with a tension spring, one end of the steel wire rope is fixed in the upper arm rod, and the other end of the steel wire rope penetrates through the joint shaft and is connected with the tension spring.
As an implementation mode, a positioning block, a screw rod and an adjusting block are arranged in the lower arm rod, the positioning block is fixedly arranged in the lower arm rod, the adjusting block is movably arranged between the joint shaft and the positioning block, and the screw rod is sequentially connected with the positioning block and the adjusting block in a threaded manner; one end of the tension spring is fixedly connected with the steel wire rope, and the other end of the tension spring is connected with the adjusting block.
As an implementation mode, the positioning block is provided with positioning screw holes penetrating through two ends of the positioning block, and one end of the adjusting block, which corresponds to the positioning block, is provided with an adjusting screw hole; the screw rod is in threaded connection in the locating screw hole, and one end of the screw rod is in threaded connection in the adjusting screw hole.
As one implementation mode, a locking nail is arranged in the upper arm rod, one end of the steel wire rope is fixed on the locking nail, and the other end of the steel wire rope penetrates through the joint shaft and is fixedly connected with the tension spring.
As one embodiment, the upper arm lever is provided with an upper joint seat, the lower arm lever is provided with a lower joint seat, and the upper joint seat and the lower joint seat are respectively rotatably arranged on the joint shaft.
As one embodiment, the winding mechanism comprises a motor and a rotating tube, wherein the motor is arranged in the projection bottom box, the rotating tube is rotatably arranged in the projection bottom box, and the output end of the motor is in driving connection with the rotating tube; the lower end of the curtain is fixed on the rotating pipe.
As one embodiment, the projection bottom box is provided with a storage groove, the storage groove is of a groove body structure with an opening at the upper end, the motor is arranged on one side of the storage groove, and the rotary pipe is rotatably arranged in the storage groove; the shape of the upper cover is matched with the opening end of the containing groove.
As an implementation mode, two sides of the storage groove in the length direction are respectively provided with a bearing bracket, and two ends of the rotating pipe are respectively and rotatably arranged on the two bearing brackets; the output end of the motor is in driving connection with one end of the rotary tube.
As one embodiment, the projection bottom box is provided with a lower arm bearing seat, and the tail end of the lower arm lever is rotatably arranged on the lower arm bearing seat; the upper cover is provided with an upper arm bearing seat, and the tail end of the upper arm rod is rotatably arranged on the upper arm bearing seat.
As one embodiment, the bottom of the upper cover is provided with a mounting portion along the length direction thereof, and the upper end of the curtain is fixed on the mounting portion.
Compared with the prior art, the ground lifting projection screen has the beneficial effects that:
according to the utility model, the lower end of the curtain and the tail end of the lower arm rod are respectively arranged on the rotating pipe of the rolling mechanism and the lower arm bearing seat of the projection bottom box, the upper end of the curtain and the tail end of the upper arm rod are arranged on the mounting part of the upper cover and the upper arm bearing seat, and the rolling mechanism is rotatably arranged in the containing groove of the projection bottom box, so that the curtain and the supporting arm can be contained in the containing groove, and the opening end of the containing groove is closed by the upper cover which is matched, thereby reducing the volume of the whole projection curtain device, realizing the containing of the projection curtain, and being convenient to carry and transport; in addition, the length of the tension spring is prolonged by the steel wire rope, the tension spring is elastically deformed to generate elasticity, the support arm stretches out under the action of the elasticity to upwards support the upper cover, and the motor of the winding mechanism drives the rotary pipe to wind the curtain, so that the upper cover is driven to move downwards, and the curtain is opened and closed while the upper cover is lifted.
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 a floor lift projection screen according to the present utility model;
FIG. 2 is a schematic view of a support arm structure of a floor lift projection screen according to the present utility model;
FIG. 3 is a rear view of the floor lift screen of the present utility model in an open position;
FIG. 4 is a front view of the floor lift screen of the present utility model in an open position;
FIG. 5 is a schematic view of a positioning block and an adjusting block of the floor lift projection screen of the present utility model.
Reference numerals illustrate:
1. a projection bottom box; 11. a storage groove; 12. a bearing support; 13. a lower arm bearing seat; 2. a curtain; 3. an upper cover; 31. an upper arm bearing seat; 4. a lower arm lever; 41. a positioning block; 411. positioning screw holes; 42. a screw; 43. an adjusting block; 431. adjusting the screw hole; 44. a tension spring; 45. a lower joint seat; 5. an upper arm lever; 51. locking nails; 52. an upper joint seat; 6. a joint shaft; 7. a rotary pipe; 8. a motor; 9. a wire rope.
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 5, the present embodiment provides a ground lifting projection screen, which includes a projection bottom box 1, a winding mechanism, a curtain 2, an upper cover 3, and a support arm; the rolling mechanism is rotatably arranged on the projection bottom box 1 and is used for rolling the curtain 2, and the tail end of the curtain 2 is fixedly connected with the upper cover 3; the support arm comprises an upper arm rod 5, a joint shaft 6, a lower arm rod 4 and a steel wire rope 9, wherein the upper arm rod 5 and the lower arm rod 4 are rotatably connected through the joint shaft 6, the tail end of the upper arm rod 5 is rotatably arranged on the upper cover 3, and the tail end of the lower arm rod 4 is rotatably arranged on the projection bottom box 1; a tension spring 44 is arranged in the lower arm rod 4, one end of the steel wire rope 9 is fixed in the upper arm rod 5, and the other end of the steel wire rope 9 penetrates through the joint shaft 6 and is connected with the tension spring 44.
Optionally, the projection bottom box 1 of the present embodiment is provided with a lower arm bearing seat 13, and the tail end of the lower arm lever 4 is rotatably arranged on the lower arm bearing seat 13; the upper cover 3 is provided with an upper arm bearing seat 31, and the end of the upper arm 5 is rotatably provided on the upper arm bearing seat 31. In this way, the support arm of the present embodiment is telescopically connected between the upper cover 3 and the projection bottom box 1, and the opening or closing of the curtain 2 corresponds to the extension or folding of the support arm.
Further, in this embodiment, the winding mechanism includes a motor 8 and a rotating tube 7, the motor 8 is disposed in the projection bottom box 1, the rotating tube 7 is rotatably disposed in the projection bottom box 1, and an output end of the motor 8 is in driving connection with the rotating tube 7; the lower end of the curtain 2 is fixed on the rotary pipe 7.
On the other hand, the bottom of the upper cover 3 of the present embodiment is provided with a mounting portion along the length direction thereof, and the upper end of the curtain 2 is fixed on the mounting portion. Through the arrangement, the curtain 2 of the embodiment can be driven to roll up by the rotating tube 7 which is driven by the motor 8 to be connected, so that the upper cover 3 generates downward force and moves downwards, and meanwhile, the support arm is folded.
Optionally, the projection bottom box 1 of the embodiment is provided with a storage groove 11, the storage groove 11 is of a groove body structure with an open upper end, the motor 8 is arranged at one side of the storage groove 11, and the rotary tube 7 is rotatably arranged in the storage groove 11; the shape of the upper cover 3 is matched with the opening end of the accommodating groove 11.
Bearing brackets 12 are respectively arranged on two sides of the storage groove 11 in the length direction, a plurality of insertion holes and wire passing holes are formed in the outer ends of the two sides, and two ends of the rotary pipe 7 are respectively and rotatably arranged on the two bearing brackets 12; the output end of the motor 8 is in driving connection with one end of the rotary pipe 7.
From this, the storage tank 11 of this embodiment possesses sufficient space, can hold the curtain 2 of roll-up wherein and fold in the support arm wherein to by the open end of storage tank 11 is sealed to upper cover 3 of looks adaptation, reduced the volume of whole projection curtain device, conveniently carry and transport, and the setting up of wire hole is favorable to the clean and tidy and pleasing to the eye of wiring of projection curtain device.
Further, the motor 8 may have the functions of clockwise rotation and counterclockwise rotation, when the folding curtain 2 is operated, the motor 8 is driven clockwise to drive the rotating tube 7 to rotate the folding curtain 2 clockwise, meanwhile, the supporting arm is folded passively, at this time, the tension spring 44 in the supporting arm is in an elongated state, the upper cover 3 moves down to the open end of the storage groove 11 of the projection bottom box 1, and after the upper cover 3 is fastened and fixed with the projection bottom box 1, the motor 8 stops rotating; when the curtain 2 needs to be opened, the buckling part of the upper cover 3 and the projection bottom box 1 can be opened, the upper cover 3 can be lifted upwards by the stretching force of the support arm driven by the shortening action of the tension spring 44 in the support arm, the motor 8 is not needed to drive, the corresponding motor 8 can be set in advance to drive anticlockwise or the motor 8 with controllable rotation speed can be selectively used, and the upper cover 3 can be lifted together by the auxiliary tension spring 44 so as to open the curtain 2.
Optionally, a positioning block 41, a screw rod 42 and an adjusting block 43 are arranged in the lower arm lever 4 in the embodiment, the positioning block 41 is fixedly arranged in the lower arm lever 4, the adjusting block 43 is movably arranged between the joint shaft 6 and the positioning block 41, and the screw rod 42 is sequentially connected with the positioning block 41 and the adjusting block 43 in a threaded manner; one end of the tension spring 44 is fixedly connected with the steel wire rope 9, and the other end of the tension spring 44 is connected with the adjusting block 43.
Wherein, the positioning block 41 is provided with positioning screw holes 411 penetrating through two ends thereof, and one end of the adjusting block 43 opposite to the positioning block 41 is provided with an adjusting screw hole 431; the screw rod 42 is screwed into the positioning screw hole 411, and one end of the screw rod 42 is screwed into the adjusting screw hole 431.
In this way, the present embodiment can limit the movement range of the adjusting block 43 on the screw 42 by changing the position of the positioning block 41 on the screw 42, and secondly, by changing the different movement range of the adjusting block 43 on the screw 42, the tension spring 44 can be located at different positions inside the lower arm 4 of the support arm, so as to adjust the elastic force generated by the tension spring 44 being elongated during the folding process of the support arm, so that the speed of lifting the upper cover 3 and the speed of opening the curtain 2 become controllable when the support arm stretches.
In addition, in order to facilitate the adjustment of the elasticity of the tension spring 44, the upper arm 5 of the present embodiment is provided with an upper joint seat 52, the lower arm 4 is provided with a lower joint seat 45, the upper joint seat 52 and the lower joint seat 45 are respectively rotatably disposed on the joint shaft 6, and a locking pin 51 is disposed in the upper arm 5, one end of the wire rope 9 is fixed on the locking pin 51, and the other end of the wire rope 9 passes through the joint shaft 6 and is fixedly connected with the tension spring 44. Therefore, in the process of opening the curtain 2, the elastic force generated when the tension spring 44 of the lower arm lever 4 of the support arm is lengthened directly acts on the steel wire rope 9, and the steel wire rope 9 is conducted to the upper arm lever 5 of the support arm, so that the upper arm lever 5 and the lower arm lever 4 rotate relative to the joint shaft 6 between the upper arm lever 5 and the lower arm lever 4 at the same time, and the result of extension of the support arm is formed.
Compared with the prior art, the ground lifting projection curtain of the embodiment is arranged through the cooperation of the projection bottom box 1 and the upper cover 3, the curtain 2 can be stored and conveniently carried, and in addition, the curtain 2 is opened and closed when the upper cover 3 is lifted through the action between the steel wire rope 9 and the tension spring 44 inside the supporting arm and the cooperation of the rolling mechanism.
The above examples illustrate only a few embodiments of the present utility model, which are described in detail and are not to be construed as limiting the scope of the floor lift projection screen of the utility model. 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. The utility model provides a ground lift projection curtain which characterized in that:
comprises a projection bottom box, a rolling mechanism, a curtain, an upper cover and a supporting arm; the rolling mechanism is rotatably arranged on the projection bottom box and is used for rolling the curtain, and the tail end of the curtain is fixedly connected with the upper cover; the support arm comprises an upper arm rod, a joint shaft, a lower arm rod and a steel wire rope, wherein the upper arm rod is rotatably connected with the lower arm rod through the joint shaft, the tail end of the upper arm rod is rotatably arranged on the upper cover, and the tail end of the lower arm rod is rotatably arranged on the projection bottom box; the lower arm rod is internally provided with a tension spring, one end of the steel wire rope is fixed in the upper arm rod, and the other end of the steel wire rope penetrates through the joint shaft and is connected with the tension spring.
2. The floor lift projection screen of claim 1, wherein:
the lower arm rod is internally provided with a positioning block, a screw rod and an adjusting block, the positioning block is fixedly arranged in the lower arm rod, the adjusting block is movably arranged between the joint shaft and the positioning block, and the screw rod is sequentially connected with the positioning block and the adjusting block in a threaded manner; one end of the tension spring is fixedly connected with the steel wire rope, and the other end of the tension spring is connected with the adjusting block.
3. The floor lift projection screen of claim 2, wherein:
the positioning block is provided with positioning screw holes penetrating through two ends of the positioning block, and one end of the adjusting block, which corresponds to the positioning block, is provided with an adjusting screw hole; the screw rod is in threaded connection in the locating screw hole, and one end of the screw rod is in threaded connection in the adjusting screw hole.
4. The floor lift projection screen of claim 1, wherein:
the inside of going up the armed lever is provided with the locking nail, wire rope's one end is fixed on the locking nail, wire rope's the other end pass the joint axle and with extension spring fixed connection.
5. The floor lift projection screen of claim 1, wherein:
the upper arm rod is provided with an upper joint seat, the lower arm rod is provided with a lower joint seat, and the upper joint seat and the lower joint seat are respectively and rotatably arranged on the joint shaft.
6. The floor lift projection screen of claim 1, wherein:
the rolling mechanism comprises a motor and a rotating tube, the motor is arranged in the projection bottom box, the rotating tube is rotatably arranged in the projection bottom box, and the output end of the motor is in driving connection with the rotating tube; the lower end of the curtain is fixed on the rotating pipe.
7. The floor lift projection screen of claim 6, wherein:
the projection bottom box is provided with a storage groove, the storage groove is of a groove body structure with an opening at the upper end, the motor is arranged on one side of the storage groove, and the rotary pipe is rotatably arranged in the storage groove; the shape of the upper cover is matched with the opening end of the containing groove.
8. The floor lift projection screen of claim 7, wherein:
bearing brackets are respectively arranged on two sides of the storage groove in the length direction, and two ends of the rotating pipe are respectively and rotatably arranged on the two bearing brackets; the output end of the motor is in driving connection with one end of the rotary tube.
9. The floor lift projection screen of claim 1, wherein:
the projection bottom box is provided with a lower arm bearing seat, and the tail end of the lower arm rod is rotatably arranged on the lower arm bearing seat; the upper cover is provided with an upper arm bearing seat, and the tail end of the upper arm rod is rotatably arranged on the upper arm bearing seat.
10. The floor lift projection screen of claim 1, wherein:
the bottom of upper cover has offered the installation department along its length direction, the upper end of curtain is fixed on the installation department.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322227445.0U CN220584539U (en) | 2023-08-17 | 2023-08-17 | Ground lifting projection screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322227445.0U CN220584539U (en) | 2023-08-17 | 2023-08-17 | Ground lifting projection screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220584539U true CN220584539U (en) | 2024-03-12 |
Family
ID=90107211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322227445.0U Active CN220584539U (en) | 2023-08-17 | 2023-08-17 | Ground lifting projection screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220584539U (en) |
-
2023
- 2023-08-17 CN CN202322227445.0U patent/CN220584539U/en active Active
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