CN220855439U

CN220855439U - Lifting projection screen

Info

Publication number: CN220855439U
Application number: CN202322599066.4U
Authority: CN
Inventors: 廖巧生; 李栋
Original assignee: Jiangxi Aimu Technology Co ltd
Current assignee: Jiangxi Aimu Technology Co ltd
Priority date: 2023-09-25
Filing date: 2023-09-25
Publication date: 2024-04-26
Anticipated expiration: 2033-09-25

Abstract

The utility model belongs to the technical field of projection screens, and particularly relates to a lifting projection screen, which comprises a winding wheel, wherein the winding wheel is rotationally connected with a flexible Fresnel light-resistant screen, one side of the winding wheel is fixedly connected with a contact electrode, the lower part of the flexible Fresnel light-resistant screen is fixedly connected with a lower connecting end, the outer wall of the lower connecting end is fixedly connected with a magnet, the outer wall of the winding wheel is provided with a clamping cleaning structure, and the clamping cleaning structure comprises a clamping plate. This over-and-under type projection screen is through the centre gripping clearance structure that sets up, through tensile two sets of grip blocks, is pulled out with loop bar elastic connection's round bar, after the centre gripping is accomplished, opens the cylinder, and the rotation of threaded rod realizes the screw thread groove threaded connection on the sliding block then, realizes the removal of sliding block, and the linkage of multiunit sliding block is expanded and is promoted, and the articulated pole ensures the maximum length that the sliding block extends, and the expansion of sliding block can the flexible fresnel light-resistant curtain of washing in full aspect.

Description

Lifting projection screen

Technical Field

The utility model relates to the technical field of projection screens, in particular to a lifting projection screen.

Background

The projection screen is a mounting consisting of a surface and a support structure for displaying a projected image for viewing by a viewer. The projection screen may be permanently installed, such as in a movie theater; coating on a wall; or a portable tripod or floor-raising model such as a meeting room or other non-dedicated viewing space, such as an existing fresnel projection screen.

At present, in the prior art, chinese patent with bulletin number CN214591762U discloses an automatic leveling lifting projection screen for laser television, the device makes the winding and the flexible fresnel light-resistant curtain of transferring very convenient high-efficient through the winding wheel that sets up, but the device in actual use, because flexible fresnel light-resistant curtain exposes under external environment for a long time, accumulates the dust through the year and causes and piles up, lacks the safeguard measure of carrying out real-time cleanness, in view of this, we propose a lifting projection screen.

Disclosure of utility model

The main objective of the present utility model is to provide a lifting projection screen, which can solve the above-mentioned problems in the prior art.

In order to achieve the above object, the lifting projection screen provided by the utility model comprises a winding wheel, wherein the winding wheel is rotationally connected with a flexible Fresnel light-resistant screen, one side of the winding wheel is fixedly connected with a contact electrode, the lower part of the flexible Fresnel light-resistant screen is fixedly connected with a lower connecting end, the outer wall of the lower connecting end is fixedly connected with a magnet, the outer wall of the winding wheel is provided with a clamping cleaning structure, and the clamping cleaning structure comprises:

The clamping plates are clamped on the outer wall of the winding wheel, and two groups of clamping plates are arranged;

the air cylinder is fixedly connected to the outer wall of one group of clamping plates, and the two groups of clamping plates are penetrated by the telescopic rod assembly;

the threaded rod is rotationally connected inside the two groups of clamping plates, is in threaded connection with the sliding block, and is provided with a plurality of groups;

and the sliding blocks are connected through the hinge rod in a transmission way.

Preferably, the telescopic rod assembly comprises a round rod, one end of the round rod is fixedly connected with the outer wall of the clamping plate, the other end of the round rod is sleeved in the sleeve rod, and the sleeved round rod is used for extending the length of the device.

Preferably, one end fixed connection of loop bar is at the outer wall of grip block, just the other end of loop bar passes through extension spring and round bar elastic connection, and extension spring's elasticity is convenient for not only reset of device, strengthens the dynamics of holding of device moreover.

Preferably, the fixed column is fixedly connected with the lower part of the sliding block, the connecting ring is sleeved on the outer wall of the fixed column, the connecting ring is fixedly connected with the hinging rod, and the linkage expansion of a plurality of groups of sliding blocks is realized by the sleeving of the connecting ring.

Preferably, the outer wall of the sliding block is provided with a thread groove, the outer wall of the thread groove is fixedly connected with an elastic lantern ring, and the sliding block moves on the threaded rod at a uniform speed through the arrangement of the thread groove.

Preferably, a brush is fixedly connected to one side, close to the winding wheel, of the sliding block, and the brush is used for cleaning the flexible Fresnel light-resistant curtain through the driving effect of a series of elements.

The utility model provides a lifting projection screen. The beneficial effects are as follows:

(1) This over-and-under type projection screen is through the centre gripping clearance structure that sets up, through tensile two sets of grip blocks, the round bar with loop bar elastic connection is pulled out, the elasticity of extension spring not only is convenient for the restoration of centre gripping clearance structure, strengthen the dynamics of holding of centre gripping clearance structure moreover, open the cylinder, the rotation of threaded rod realizes the screw groove threaded connection on the sliding block then, realize the removal of sliding block, the linkage of multiunit sliding block is expanded and is promoted, the articulated pole ensures the maximum length that the sliding block extends, the expansion of sliding block can the flexible fresnel light-resistant curtain of washing in full aspect.

(2) This over-and-under type projection screen is through the sliding block that sets up, has realized the linkage flexible of multiunit sliding block through cup jointing the go-between on the outer wall of fixed column, through the setting of screw groove for the sliding block at the last uniform motion of threaded rod, the elastic collar is convenient for the sliding block by the loop bar slip to the buffering that the round bar outer wall carries out certain degree, realizes the stable expansion of sliding block, smooth reduction later stage device's wearing and tearing hidden danger when contracting.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a three-dimensional structure of the present utility model;

FIG. 2 is a schematic view of a clamping and cleaning structure according to the present utility model;

FIG. 3 is a schematic view of a portion of a clamp cleaning structure according to the present utility model;

FIG. 4 is a schematic view of a slider structure according to the present utility model;

fig. 5 is a schematic view of the telescopic rod assembly of the present utility model.

Reference numerals illustrate:

1. A winding wheel; 2. a flexible fresnel light-resistant curtain; 3. a contact electrode; 4. a lower connection end; 401. a magnet; 5. clamping and cleaning the structure; 51. a clamping plate; 52. a cylinder; 53. a telescoping rod assembly; 531. a round bar; 532. a telescopic spring; 533. a loop bar; 54. a threaded rod; 55. a sliding block; 551. fixing the column; 552. a thread groove; 553. an elastic collar; 554. a brush; 56. a hinge rod; 57. and a connecting ring.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, the present utility model provides a lifting projection screen, which includes a winding wheel 1, the winding wheel 1 is rotatably connected with a flexible fresnel light-resistant screen 2, the winding wheel 1 is convenient for winding the flexible fresnel light-resistant screen 2 and protecting the flexible fresnel light-resistant screen 2, the flexible fresnel light-resistant screen 2 has a fresnel structure, the projection effect of a projector for projecting display content onto the flexible fresnel light-resistant screen 2 is improved, one side of the winding wheel 1 is fixedly connected with a contact electrode 3, the lower side of the flexible fresnel light-resistant screen 2 is fixedly connected with a lower connecting end 4, the outer wall of the lower connecting end 4 is fixedly connected with a magnet 401, the magnet 401 is convenient to be fixed with two sides of the fixed end under the magnetic attraction cooperation, the outer wall of the winding wheel 1 is provided with a clamping cleaning structure 5, and the clamping cleaning structure 5 includes a clamping plate 51.

In the embodiment of the utility model, in order to clean the flexible Fresnel light-resistant curtain 2 exposed in the external environment for a long time in real time, the service life of the lifting projection screen is prolonged, specifically, the clamping plates 51 are clamped on the outer wall of the winding wheel 1, two groups of clamping plates 51 are arranged, clamping and fixing effects on the winding wheel 1 are realized by clamping and fixing effects of the two groups of clamping plates 51, the air cylinder 52 is fixedly connected on the outer wall of one group of clamping plates 51, the two groups of clamping plates 51 are penetrated by the telescopic rod assembly 53, the telescopic rod assembly 53 comprises a round rod 531, one end of the round rod 531 is fixedly connected with the outer wall of the clamping plate 51, the other end of the round rod 531 is sleeved in the sleeve rod 533, the sleeved round rod 531 is used for extending the length of the device, one end of the sleeve rod 533 is fixedly connected with the outer wall of the clamping plate 51, the other end of the sleeve rod 533 is elastically connected with the round rod 531 through a telescopic spring 532, the elasticity of the telescopic spring 532 is not only convenient for resetting of the device, but also the clamping and strength of the reinforcing device is realized, the threaded rod 54 is rotatably connected inside the two groups of clamping plates 51, one end of the telescopic spring is rotatably connected with the telescopic rod 55, one end of the telescopic rod is rotatably provided with the sliding block 55, and the sliding block 55 is connected with the sliding block 55 of the sliding block 55 is connected with the sliding block 55, and the sliding block 55 is connected with the sliding block 55, and the sliding block 55 is in turn 55 is connected with the sliding block 55, and the sliding block 55 is connected with the sliding block 55 is in the sliding block 55 is connected with the sliding block 55 through 55, and the sliding block 55 is connected with the sliding block 55.

Further, in order to realize the linkage of sliding block 55 flexible, improve the show result of use of follow-up projection screen, specifically, thread groove 552 has been seted up to the outer wall of sliding block 55, the outer wall fixedly connected with elasticity lantern ring 553 of thread groove 552, through the setting of thread groove 552, make sliding block 55 at the last uniform velocity motion of threaded rod 54, elasticity lantern ring 553 is convenient for sliding block 55 by the loop bar 533 to carry out the buffering of certain degree to round bar 531 outer wall, one side fixedly connected with brush 554 that sliding block 55 is close to rolling wheel 1, the clearance to flexible fresnel light-resistant curtain 2 is realized through the drive effect of a series of components to the brush 554.

In the utility model, when in use, by stretching the two groups of clamping plates 51, the round rod 531 elastically connected with the loop bar 533 is pulled out, the elasticity of the telescopic spring 532 is convenient for resetting the clamping and cleaning structure 5, the clamping force of the clamping and cleaning structure 5 is enhanced, after the clamping is completed, the cylinder 52 is started, the rotation of the threaded rod 54 is further realized, the threaded groove 552 on the sliding block 55 is in threaded connection, the movement of the sliding block 55 is realized, meanwhile, the elastic collar 553 on the sliding block 55 is convenient for the sliding block 55 to slide from the loop bar 533 to the outer wall of the round rod 531 for buffering to a certain extent, the linkage expansion and pushing of the sliding blocks 55 are realized, the linkage expansion and the retraction of the sliding blocks 55 are realized through the sleeving of the connecting rings 57 sleeved on the outer wall of the fixed column 551, the hinging rod 56 ensures the maximum extending length of the sliding block 55, and the expansion of the sliding block 55 can clean the flexible Fresnel light resisting curtain 2 in all aspects.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. The utility model provides a lift-type projection screen, includes reel (1), its characterized in that: the winding wheel (1) is rotationally connected with the flexible Fresnel light-resistant curtain (2), one side fixedly connected with contact electrode (3) of winding wheel (1), the below and the lower link (4) fixedly connected with of flexible Fresnel light-resistant curtain (2), the outer wall fixedly connected with magnet (401) of lower link (4), the outer wall of winding wheel (1) is provided with centre gripping clearance structure (5), centre gripping clearance structure (5) include:

The clamping plates (51) are clamped on the outer wall of the winding wheel (1), and the clamping plates (51) are provided with two groups;

The air cylinder (52), the said air cylinder (52) is fixedly connected to outer wall of a group of clamp plates (51), and the said two groups of clamp plates (51) are penetrated by the telescopic link assembly (53);

The threaded rod (54) is rotatably connected inside the two groups of clamping plates (51), the threaded rod (54) is in threaded connection with the sliding block (55), and the sliding block (55) is provided with a plurality of groups;

And the hinge rods (56), wherein the sliding blocks (55) are in transmission connection through the hinge rods (56).

2. A lift-type projection screen as set forth in claim 1 wherein: the telescopic rod assembly (53) comprises a round rod (531), one end of the round rod (531) is fixedly connected with the outer wall of the clamping plate (51), and the other end of the round rod (531) is sleeved in the sleeve rod (533).

3. A lift-type projection screen as set forth in claim 2 wherein: one end of the loop bar (533) is fixedly connected to the outer wall of the clamping plate (51), and the other end of the loop bar (533) is elastically connected with the round bar (531) through the telescopic spring (532).

4. A lift-type projection screen as set forth in claim 1 wherein: the lower part of the sliding block (55) is fixedly connected with a fixed column (551), the outer wall of the fixed column (551) is sleeved with a connecting ring (57), and the connecting ring (57) is fixedly connected with a hinging rod (56).

5. A lift-type projection screen as set forth in claim 1 wherein: the outer wall of the sliding block (55) is provided with a thread groove (552), and the outer wall of the thread groove (552) is fixedly connected with an elastic collar (553).

6. A lift-type projection screen as set forth in claim 1 wherein: and one side of the sliding block (55) close to the winding wheel (1) is fixedly connected with a hairbrush (554).