CN213715687U

CN213715687U - Double-sided projection screen rotating structure

Info

Publication number: CN213715687U
Application number: CN202023031096.8U
Authority: CN
Inventors: 肖晓宇; 黄奇
Original assignee: Shenzhen Guangke Digital Technology Co ltd
Current assignee: Shenzhen Guangke Digital Technology Co ltd
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2021-07-16
Anticipated expiration: 2030-12-16

Abstract

The utility model provides a double-sided projection screen rotating structure, which comprises a telescopic supporting rod; the bottom of the telescopic supporting rod is provided with a group of rectangular rods distributed in an annular array shape, and the bottom of each rectangular rod is provided with a universal wheel; a rotary connecting seat is fixed on the telescopic supporting rod through a bolt, a rectangular block is arranged at the bottom of the rotary connecting seat, and a groove matched with the rectangular block is formed in the telescopic supporting rod; the rotary connecting seat is provided with a clamped U-shaped supporting seat. The flip structure of whiteboard has been improved, through the rotary mechanism who is provided with two sets of elastic connection on U-shaped supporting seat, can drive the locating piece and outwards remove when dragging the handle, two sets of rotary mechanism can remove simultaneously this moment, then the turning handle drives the whiteboard upset to realized the effect that blank regulation flip angle, the setting of locating piece is more convenient when angle regulation, and reset spring on the fender ring can rotary mechanism automatic re-setting be connected with U-shaped supporting seat.

Description

Double-sided projection screen rotating structure

Technical Field

The utility model belongs to the technical field of the projection screen, more specifically say, in particular to two-sided projection screen revolution mechanic.

Background

The projection screen is one of the most commonly used products in peripheral equipment of the projector, and is called as the projection screen for short; if the projection screen is properly matched with the projector, a good projection effect can be obtained, a double-sided projection screen is needed to better provide a viewing angle and save the space of the projection screen, and the conventional double-sided projection screen is generally replaced by a white board.

For example, application No.: CN201320698561.4, which discloses a projection screen. The projection screen comprises a projection screen and a screen fixing device, wherein the screen fixing device comprises a support plate and a double-faced adhesive tape, the double-faced adhesive tape is pasted on the surface of the support plate, and the projection screen is pasted on the support plate through the double-faced adhesive tape. Through being provided with the double faced adhesive tape in the backup pad, the projection screen passes through on the double faced adhesive tape bonding backup pad, and the double faced adhesive tape can be with each firm bonding in backup pad of position of projection screen, and the backup pad can effectively support the projection screen again, hangs the dress on the wall through screen fixing device at the projection screen after, the whole by the backup pad prop up of projection screen, the projection screen all around and the interior region can obtain effectual support and location, ensure that the surface of projection screen has higher roughness to improve display effect.

Based on the search for patent numbers, the defects in the prior art are combined to find that:

when the existing double-sided projection screen is used, the projection angle needs to be adjusted as required, the projection screen needs to be fixed through a bolt after the angle is adjusted, the operation is troublesome, the projection screen is difficult to rotate, the bolt threads are prone to damage due to frequent rotation, the angle is not easy to control when the projection screen is turned, the projection screen is affected by the external environment when the bolt is clamped, and the screen projection effect is affected.

Therefore, in view of the above, research and improvement are made on the existing structure and defects, and a rotating structure of a double-sided projection screen is provided to achieve the purpose of higher practical value.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a two-sided projection screen revolution mechanic to solve current two-sided projection screen when using, need adjust the projection angle as required, need fix through the bolt after adjusting the angle, not only troublesome poeration, it is still harder when rotating the projection screen, often rotate the bolt screw thread and damage easily, the angle is not well controlled when the projection screen upset, receive external influence projection screen can appear not hard up phenomenon when the bolt presss from both sides tightly, the problem of screen effect is thrown in the influence.

The utility model is used for a purpose and efficiency of two-sided projection screen revolution mechanic is reached by following specific technological means:

a double-sided projection screen rotating structure comprises a telescopic supporting rod; the bottom of the telescopic supporting rod is provided with a group of rectangular rods distributed in an annular array shape, and the bottom of each rectangular rod is provided with a universal wheel; a rotary connecting seat is fixed on the telescopic supporting rod through a bolt, a rectangular block is arranged at the bottom of the rotary connecting seat, and a groove matched with the rectangular block is formed in the telescopic supporting rod; the rotary connecting seat is provided with a clamped U-shaped supporting seat, and the bottom of the U-shaped supporting seat is provided with a clamping bolt; two groups of rotating mechanisms are symmetrically arranged on the U-shaped supporting seat, mounting blocks are fixed on the rotating mechanisms through bolts, and a double-sided white board is clamped on the mounting blocks; two fixing bolts are symmetrically installed on the installation blocks of the two U-shaped structures, and mesh grooves are formed in the left side surface and the right side surface of the white board.

Furthermore, the echelonment be equipped with a set of circular arc arch that is the annular array form and distributes on the rotation connecting seat, and set up the recess that agrees with mutually with the circular arc arch on the clamping bolt, a cover barrel-shaped snap ring is installed to the bottom of U-shaped supporting seat, sets up a screw hole that agrees with mutually with the clamping bolt on the snap ring.

Furthermore, rotary mechanism is equipped with a set of locating piece that is the annular array form and distributes including axis of rotation, handle and locating piece in the axis of rotation, and the U-shaped supporting seat is gone up the symmetry and is seted up two spacing grooves that agree with mutually with the locating piece, has a handle of returning the font through the bolt fastening in the axis of rotation.

Furthermore, a rectangular groove is formed in the rotating shaft, a threaded hole is formed in the rectangular groove, a rectangular block matched with the rotating shaft is arranged on the handle, and a stepped mounting hole is formed in the rectangular block.

Furthermore, rotary mechanism is still including keeping off the ring, and the tip of axis of rotation is equipped with one and keeps off the ring, and keeps off and install reset spring between ring and the U-shaped supporting seat, keeps off to be equipped with a rectangle stopper on the ring, sets up the recess that agrees with mutually with the rectangle stopper on the installation piece.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses improved the revolution mechanic of blank, through the rotation connecting seat that sets up on telescopic support bar, realized blank circumferential direction's effect, it is better to match through the circular arc arch that sets up on moving the connecting seat and the recess on the clamp bolt presss from both sides tight effect, through the sleeve that sets up bottom the U-shaped supporting seat, makes things convenient for the installation of U-shaped supporting seat.

The flip structure of whiteboard has been improved, through the rotary mechanism who is provided with two sets of elastic connection on U-shaped supporting seat, can drive the locating piece and outwards remove when dragging the handle, two sets of rotary mechanism can remove simultaneously this moment, then the turning handle drives the whiteboard upset to realized the effect that blank regulation flip angle, the setting of locating piece is more convenient when angle regulation, and reset spring on the fender ring can rotary mechanism automatic re-setting be connected with U-shaped supporting seat.

Drawings

Fig. 1 is a schematic axial side structure diagram of the main body of the present invention.

Fig. 2 is a schematic bottom-view axial-side structure of fig. 1 according to the present invention.

Fig. 3 is a schematic diagram of the structure of the main body of the present invention at the side of the partial section shaft after the rotating mechanism is pulled outward.

Fig. 4 is a schematic diagram of the side structure of the local split and the local profile of the main body of the present invention.

Fig. 5 is an enlarged schematic axial view of fig. 1 a according to the present invention.

Fig. 6 is an enlarged schematic axial view of the present invention at B of fig. 4.

Fig. 7 is a schematic diagram of a whiteboard side structure of the present invention.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a telescopic support rod; 2. rotating the connecting seat; 3. clamping the bolt; 4. a U-shaped supporting seat; 5. a rotation mechanism; 501. a rotating shaft; 502. a handle; 503. positioning blocks; 504. a baffle ring; 6. mounting blocks; 7. a white board.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in figures 1 to 6:

the utility model provides a double-sided projection screen rotating structure, which comprises a telescopic supporting rod 1; the bottom of the telescopic supporting rod 1 is provided with a group of rectangular rods distributed in an annular array shape, and the bottom of each rectangular rod is provided with a universal wheel; a rotary connecting seat 2 is fixed on the telescopic supporting rod 1 through a bolt, a rectangular block is arranged at the bottom of the rotary connecting seat 2, and a groove matched with the rectangular block is formed in the telescopic supporting rod 1; a clamped U-shaped supporting seat 4 is arranged on the rotary connecting seat 2, and a clamping bolt 3 is arranged at the bottom of the U-shaped supporting seat 4; two groups of rotating mechanisms 5 are symmetrically arranged on the U-shaped supporting seat 4, mounting blocks 6 are fixed on the rotating mechanisms 5 through bolts, and a double-sided white board 7 is clamped on the mounting blocks 6; two fixing bolts are symmetrically arranged on the mounting blocks 6 of the two U-shaped structures, and mesh grooves are formed in the left side surface and the right side surface of the white board 7.

Wherein, be equipped with a set of circular arc arch that is the distribution of annular array form on the rotation connecting seat 2 of echelonment, and set up the recess that agrees with mutually with the circular arc arch on the clamp bolt 3, a cover barrel-shaped snap ring is installed to the bottom of U-shaped supporting seat 4, set up a screw hole that agrees with mutually with clamp bolt 3 on the snap ring, during the use, after U-shaped supporting seat 4 passes through snap ring joint to rotate connecting seat 2, rotate clamp bolt 3 and be connected to the snap ring on, U-shaped supporting seat 4 is spacing from top to bottom through the U-shaped supporting seat 4 of echelonment this moment, clamp bolt 3 has played the spacing fixed effect of U-shaped supporting seat 4 circumference, it is better to rotate circular arc arch on the connecting seat 2 and the recess on the clamp bolt.

Wherein, rotary mechanism 5 is including axis of rotation 501, handle 502 and locating piece 503, be equipped with a set of locating piece 503 that is the distribution of annular array form on the axis of rotation 501, and the symmetry is seted up two spacing grooves that agree with mutually with locating piece 503 on the U-shaped supporting seat 4, there is the handle 502 of a font of returning through the bolt fastening on the axis of rotation 501, during the use, can drive locating piece 503 outwards removal when dragging handle 502, then rotation handle 502 drives whiteboard 7 and rotates together, thereby realized whiteboard 7 regulation flip angle's effect, the setting of locating piece 503 is more convenient when angle regulation.

Wherein, a rectangular channel has been seted up on rotation axis 501, and set up threaded hole on the rectangular channel, be equipped with a rectangular block that agrees with rotation axis 501 mutually on the handle 502, seted up a echelonment mounting hole on the rectangular block, during the use, the rectangular channel on the rotation axis 501 not only makes things convenient for the installation of handle 502, and the rectangular channel has still played the spacing effect of handle 502 circumference.

The rotating mechanism 5 further comprises a retaining ring 504, the end of the rotating shaft 501 is provided with the retaining ring 504, a return spring is arranged between the retaining ring 504 and the U-shaped supporting seat 4, a rectangular limiting block is arranged on the retaining ring 504, a groove matched with the rectangular limiting block is formed in the mounting block 6, when the rotating mechanism is used, the return spring on the retaining ring 504 can push the positioning block 503 to automatically reset and is connected with the U-shaped supporting seat 4, and a protrusion on the retaining ring 504 has the effect of circumferential limiting after being mounted on the mounting block 6.

The specific use mode and function of the embodiment are as follows:

when the whiteboard device is used, the whiteboard 7 is clamped on the mounting block 6 firstly, then the bolt on the mounting block 6 is rotated to fix the whiteboard 7, the position to be projected of the whiteboard device is pushed, when the rotating angle of the whiteboard 7 needs to be adjusted, the clamping bolt 3 is loosened, then the rotating angle of the whiteboard 7 is adjusted by rotating the U-shaped supporting seat 4, when the turning angle of the whiteboard 7 needs to be adjusted, the positioning block 503 is driven to move outwards when the handle 502 is dragged, at the moment, the two groups of rotating mechanisms 5 can move simultaneously, then the rotating handle 502 drives the whiteboard 7 to turn over, thereby realizing the effect of adjusting the turning angle of the whiteboard 7, the positioning block 503 is convenient to be arranged when the angle is adjusted, the reset spring on the baffle ring 504 can automatically reset the rotating mechanism 5 to be connected with the U-shaped supporting seat 4, after the U-shaped supporting seat 4 is clamped on the rotating connecting seat 2 through the clamping, at the moment, the U-shaped supporting seat 4 is limited up and down through the stepped U-shaped supporting seat 4, the clamping bolt 3 plays a role in circumferential limiting and fixing of the U-shaped supporting seat 4, and the arc protrusion on the rotating connecting seat 2 is matched with the groove in the clamping bolt 3 to achieve better rotation preventing effect.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A double-sided projection screen rotating structure is characterized in that: comprises a telescopic supporting rod (1); the bottom of the telescopic supporting rod (1) is provided with a group of rectangular rods distributed in an annular array shape, and the bottom of each rectangular rod is provided with a universal wheel; a rotary connecting seat (2) is fixed on the telescopic supporting rod (1) through a bolt, a rectangular block is arranged at the bottom of the rotary connecting seat (2), and a groove matched with the rectangular block is formed in the telescopic supporting rod (1); a clamped U-shaped supporting seat (4) is arranged on the rotary connecting seat (2), and a clamping bolt (3) is arranged at the bottom of the U-shaped supporting seat (4); two groups of rotating mechanisms (5) are symmetrically arranged on the U-shaped supporting seat (4), mounting blocks (6) are fixed on the rotating mechanisms (5) through bolts, and a double-sided white board (7) is clamped on the mounting blocks (6); two fixing bolts are symmetrically installed on the installation block (6) of the two U-shaped structures, and mesh grooves are formed in the left side surface and the right side surface of the white board (7).

2. The rotating structure of a double-sided projection screen of claim 1, wherein: the stepped rotary connecting seat (2) is provided with a group of circular arc bulges distributed in an annular array shape, the clamping bolt (3) is provided with a groove matched with the circular arc bulges, the bottom of the U-shaped supporting seat (4) is provided with a sleeve-shaped snap ring, and the snap ring is provided with a threaded hole matched with the clamping bolt (3).

3. The rotating structure of a double-sided projection screen of claim 1, wherein: the rotating mechanism (5) comprises a rotating shaft (501), a handle (502) and positioning blocks (503), a group of positioning blocks (503) distributed in an annular array form are arranged on the rotating shaft (501), two limiting grooves matched with the positioning blocks (503) are symmetrically formed in the U-shaped supporting seat (4), and the handle (502) shaped like a Chinese character 'hui' is fixed on the rotating shaft (501) through bolts.

4. The rotating structure of a double-sided projection screen of claim 3, wherein: a rectangular groove is formed in the rotating shaft (501), a threaded hole is formed in the rectangular groove, a rectangular block matched with the rotating shaft (501) is arranged on the handle (502), and a stepped mounting hole is formed in the rectangular block.

5. The rotating structure of a double-sided projection screen of claim 1, wherein: the rotating mechanism (5) further comprises a baffle ring (504), the end part of the rotating shaft (501) is provided with the baffle ring (504), a reset spring is installed between the baffle ring (504) and the U-shaped supporting seat (4), a rectangular limiting block is arranged on the baffle ring (504), and a groove matched with the rectangular limiting block is formed in the installation block (6).