CN212586690U

CN212586690U - Multimedia projection screen

Info

Publication number: CN212586690U
Application number: CN202021478466.XU
Authority: CN
Inventors: 蔡楚雄; 叶泽浩
Original assignee: Zhongyuan Lvjian Guangdong Technology Co ltd
Current assignee: Zhongyuan Lvjian Guangdong Technology Co ltd
Priority date: 2020-07-24
Filing date: 2020-07-24
Publication date: 2021-02-23
Anticipated expiration: 2030-07-24

Abstract

The utility model discloses a multimedia projection screen, its technical scheme main points are: including the stand, still include: the supporting column is in threaded connection with the top of the upright column; the support table is detachably connected to the top of the support column; the first screen board is rotatably connected to the support platform; the two low-gear rods are symmetrically and rotatably connected above the supporting platform; two rows of blocking holes are symmetrically formed in the first screen board and used for inserting the two blocking rods; a sliding groove provided in the first screen plate; the second screen board is connected in the sliding groove in a sliding mode; the multimedia projection screen can be conveniently rotated to adjust the angle when in use, can be conveniently rotated to be stored, can adjust the size of the projection screen and is also convenient to adjust the height of the projection screen.

Description

Multimedia projection screen

Technical Field

The utility model relates to a multimedia field, in particular to multimedia projection screen.

Background

As a carrier for projection display, there are a projection curtain, a projection panel, etc., wherein the projection curtain can be rolled and unfolded frequently, and the projection panel is fixed at a specific location for display.

Reference may be made to the chinese patent publication No. CN108513114A, which discloses a flat panel projector with a convenient angle adjustment, comprising a body, a support plate, a projector, a first rotating shaft, a first reflective mirror, a second rotating shaft, a second reflective mirror, a flexible cord, a rear projection screen, and a heat dissipation device. The novel multifunctional mobile phone is characterized in that a supporting plate is arranged below the inner side wall of the right end of the mobile phone body, a projector base is arranged on the supporting plate, a projector is hinged to the projector base, a transverse plate is fixed to the inner side wall of the mobile phone body on the left side of the projector, a first rotating shaft is arranged at the right end of the transverse plate, and a first reflective mirror is connected to the first rotating shaft in a rotating mode. And a second rotating shaft is further arranged on the inner side wall of the right end of the machine body and positioned above the supporting plate, and a second reflecting mirror is rotatably connected to the second rotating shaft.

The screen panel in the above-described flat panel projector, which facilitates the adjustment of the angle, can be adjusted in angle. However, the above-mentioned flat-panel projector with convenient angle adjustment still has some disadvantages, such as: the structure of its rotation and storage is complicated, the size of its screen is difficult to adjust, moreover it can't adjust the display height as required.

SUMMERY OF THE UTILITY MODEL

To solve the above problems, an object of the present invention is to provide a multimedia projection screen.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a multimedia projection screen comprising a post, further comprising:

the supporting column is in threaded connection with the top of the upright column;

the support table is detachably connected to the top of the support column;

the first screen board is rotatably connected to the support platform;

the two stop rods are symmetrically and rotatably connected above the support platform;

two rows of blocking holes are symmetrically formed in the first screen board and used for inserting the two blocking rods;

a sliding groove provided in the first screen plate;

the second screen board is connected in the sliding groove in a sliding mode;

a threaded post secured to the second screen panel;

the notch is formed in the first screen board and is used for the threaded column to penetrate through;

and the thread ring sleeve is in threaded connection with the outside of the thread column.

Preferably, a limiting plate is detachably connected to the upper portion of the supporting table, two protruding columns are fixed to the limiting plate, and the two protruding columns are respectively inserted into the supporting table.

Preferably, the top of the supporting column is clamped with a bearing cylinder, the bearing cylinder is installed on the bottom surface of the supporting table, and the bearing cylinder and the supporting column are fixedly connected through a first locking bolt.

Preferably, an installation plate is fixed to the top of the bearing cylinder and fixed to the bottom surface of the supporting table through a plurality of second locking bolts.

Preferably, a plurality of push rotating rods are welded and fixed on the annular wall of the supporting column.

Preferably, two guide blocks are fixed on the second screen plate, two guide grooves communicated with the sliding groove are formed in the first screen plate, and the guide blocks are connected in the guide grooves in a sliding mode.

Preferably, a reinforcing rod is welded and fixed between the two resisting rods.

Preferably, an avoiding groove which is convenient for the threaded column to penetrate out is formed in the supporting table.

To sum up, the utility model discloses following beneficial effect has at least:

the multimedia projection screen can be conveniently rotated to adjust the angle when in use, can be conveniently rotated to be stored, and can adjust the size and the height of the projection screen; after an operator rotates the first screen board above the support table to a certain angle, the blocking rod can be inserted into the blocking hole to be supported and fixed, so that the angle of the first screen board can be adjusted; in addition, an operator can pull the second screen board to slide in the sliding groove, so that the threaded column is driven to slide in the groove, and then the threaded ring sleeve is screwed to realize locking, so that the size of the projection screen can be changed; furthermore, when an operator rotates the support column screwed to the outside of the upright, the height of the projection screen can be adjusted.

Drawings

Fig. 1 is one of the schematic structural diagrams of the present invention;

FIG. 2 is a structural sectional view of the present invention;

fig. 3 is a second schematic structural diagram of the present invention;

fig. 4 is an enlarged view of a in fig. 3.

Reference numerals: 1. a column; 2. a support pillar; 3. a support table; 4. a first screen panel; 5. a stop lever; 6. a stop hole; 7. a sliding groove; 8. a second screen panel; 9. a threaded post; 10. a notch; 11. a threaded ring sleeve; 12. a limiting plate; 13. a projecting post; 14. a bearing cylinder; 15. a first locking bolt; 16. mounting a plate; 17. a second locking bolt; 18. pushing the rotating rod; 19. a guide block; 20. a guide groove; 21. a reinforcing bar; 22. avoiding the groove.

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 work belong to the protection scope of the present invention.

Referring to fig. 1 and 2, a multimedia projection screen includes a column 1, wherein a support column 2 is screwed on the top of the column 1, and when an operator rotates the support column 2, the operator can drive a first screen panel 4 and a second screen panel 8 above the support column 2 to adjust the height, so as to conveniently adjust the height of the projection screen panel.

Referring to fig. 1 and 2, for the convenience of accomodating first screen panel 4, install a supporting bench 3 at the top of support column 2, rotate on a supporting bench 3 and connect first screen panel 4, rotate simultaneously and connect two blocking rods 5 in a supporting bench 3 top symmetry rotation, set up on first screen panel 4 two and totally eight confession blocking rod 5 male blocking holes 6, can realize fixing first screen panel 4 after pegging graft to blocking hole 6 through rotating blocking rod 5.

Referring to fig. 1 and 2, in order to adjust the size of the projection screen conveniently, a sliding groove 7 is formed in the first screen panel 4, the second screen panel 8 is connected in the sliding groove 7 in a sliding manner, meanwhile, a threaded column 9 is fixed on the second screen panel 8, a notch 10 for the threaded column 9 to pass through is formed in the first screen panel 4, a threaded ring sleeve 11 is connected to the exterior of the threaded column 9 in a threaded manner, when the second screen panel 8 is pulled to slide in the sliding groove 7, the size of the projection screen can be changed, the threaded column 9 is driven to slide in the notch 10, and then the threaded ring sleeve 11 is screwed, so that the second screen panel 8 can be locked.

Referring to fig. 2 and 3, in order to prevent the first screen panel 4 from rotating excessively and collapsing, a limiting plate 12 is detachably connected above the supporting table 3, two protruding columns 13 are fixed on the limiting plate 12, wherein the two protruding columns 13 are respectively inserted into the supporting table 3, the fixing of the limiting plate 12 can be realized by the protruding columns 13, and the limiting plate 12 can prevent the first screen panel 4 from rotating excessively.

Referring to fig. 2 and fig. 3, in order to facilitate the connection and fixation of the support column 2 and the support table 3, a support cylinder 14 is clamped at the top of the support column 2, the support cylinder 14 is installed on the bottom surface of the support table 3, the support cylinder 14 and the support column 2 are fixedly connected through a first locking bolt 15, a mounting plate 16 is fixed at the top of the support cylinder 14, the mounting plate 16 is fixed on the bottom surface of the support table 3 through four second locking bolts 17, and the support cylinder 14, the first locking bolt 15, the mounting plate 16 and the second locking bolt 17 can conveniently realize the connection and fixation of the support column 2 and the support table 3.

Referring to fig. 3 and 4, in order to facilitate the operator to rotate the supporting column 2, three pushing and rotating rods 18 are welded and fixed on the annular wall of the supporting column 2; in order to improve the stability when drawing the second screen 8, two guide blocks 19 are fixed on the second screen 8, two guide grooves 20 which are mutually communicated with the sliding groove 7 are arranged in the first screen 4, wherein the guide blocks 19 are connected in the guide grooves 20 in a sliding way, and the guide grooves 19 and the guide grooves 20 are matched to increase the stability of the sliding of the second screen 8.

Referring to fig. 2 and 3, in order to increase the stability of the resistance rods 5, a reinforcing rod 21 is welded and fixed between the two resistance rods 5; in order to ensure that the first screen panel 4 can be completely rotated to the horizontal, an escape groove 22 is provided in the support platform 3 to facilitate the threading of the threaded post 9.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A multimedia projection screen comprising uprights (1), characterized in that: further comprising:

the supporting column (2) is in threaded connection with the top of the upright column (1);

the supporting platform (3), the supporting platform (3) is detachably connected to the top of the supporting column (2);

the first screen board (4), the said first screen board (4) is connected on the said supporting bench (3) rotatably;

the two stop rods (5) are symmetrically and rotatably connected above the supporting platform (3);

two rows of blocking holes (6), wherein the two rows of blocking holes (6) are symmetrically formed in the first screen board (4) and are used for inserting the two blocking rods (5);

a sliding groove (7), the sliding groove (7) being provided in the first screen (4);

the second screen plate (8), the said second screen plate (8) is connected in said sliding groove (7) slidably;

a threaded post (9), said threaded post (9) being secured to said second shroud (8);

the notch (10), the said notch (10) is set up on the said first screen board (4) and is used for the said threaded column (9) to pass through;

and the threaded ring sleeve (11) is in threaded connection with the outer part of the threaded column (9).

2. The multimedia projection screen of claim 1, wherein: a limiting plate (12) is detachably connected to the upper portion of the supporting table (3), two protruding columns (13) are fixed on the limiting plate (12), and the two protruding columns (13) are respectively inserted into the supporting table (3).

3. The multimedia projection screen of claim 1, wherein: the top joint of support column (2) has bearing section of thick bamboo (14), bearing section of thick bamboo (14) are installed brace table (3) bottom surface, bearing section of thick bamboo (14) with it is fixed to be connected through first locking bolt (15) between support column (2).

4. The multimedia projection screen of claim 3, wherein: the top of bearing cylinder (14) is fixed with mounting panel (16), mounting panel (16) are fixed through a plurality of second locking bolt (17) brace table (3) bottom surface.

5. The multimedia projection screen of claim 1, wherein: and a plurality of push rotating rods (18) are welded and fixed on the annular wall of the supporting column (2).

6. The multimedia projection screen of claim 1, wherein: two guide blocks (19) are fixed on the second screen board (8), two guide grooves (20) communicated with the sliding groove (7) are formed in the first screen board (4), and the guide blocks (19) are connected in the guide grooves (20) in a sliding mode.

7. The multimedia projection screen of claim 1, wherein: and a reinforcing rod (21) is welded and fixed between the two resisting rods (5).

8. The multimedia projection screen of claim 1, wherein: an avoiding groove (22) which is convenient for the threaded column (9) to penetrate out is formed in the supporting platform (3).