CN215596966U - Support for projection - Google Patents

Abstract

The utility model discloses a projection bracket, which comprises a suspender component, a first mounting structure and a second mounting structure, wherein the suspender component is provided with a fixed frame, a first swinging frame is movably pivoted on the fixed frame, and a first lead screw and a first screw nut are arranged between the first swinging frame and the fixed frame; the first swing frame is movably pivoted with a second swing frame, and a second lead screw and a second nut are arranged between the first swing frame and the second swing frame; and the second swing frame is connected with a mounting plate for mounting the projection equipment. The support for projection drives the first swing frame to swing up and down relative to the fixed frame by rotating the first lead screw and the first nut to move relative to the first lead screw, drives the second swing frame to swing left and right relative to the first swing frame by rotating the second lead screw and the second nut to move relative to the second lead screw, and can only rotate without axial movement, so that the swing angles of the projection equipment on the mounting plate in the left and right directions and the front and back directions can be accurately adjusted, and the adjustment is simple and fast.

Description

Support for projection

Technical Field

The utility model relates to a projection bracket.

Background

In the prior art, most of projection equipment is hung on an indoor ceiling through a support, in order to adjust the projection direction of the projection equipment, the projection equipment needs to be driven to generate certain displacement and swing relative to the support for projection in the installation and debugging processes, and then the position of the projection equipment is fixed, especially the adjustment of the angle of the projection equipment is more important, the adjustment mechanism of the existing support is difficult to adjust the up-down swinging angle and the left-right swinging angle of the projection equipment, the adjustment precision is low, and the adjustment mode is very inconvenient.

In addition, the support and the projection equipment are generally connected through a bolt assembly, the positions of mounting holes of different types of projection equipment are different, and the conventional support for projection cannot be used for adapting to and mounting projection equipment with different sizes.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides the projection bracket which can accurately adjust the swing angle of the projection equipment and is simple and quick to adjust.

According to an embodiment of the utility model, a support for projection comprises: the upper end of the suspension rod assembly is provided with a first mounting structure, the lower end of the suspension rod assembly is provided with a fixed frame, a first swing frame is movably pivoted on the fixed frame, a first lead screw and a first nut matched with the first lead screw are arranged between the first swing frame and the fixed frame, the first lead screw is only rotatably arranged on one of the first swing frame and the fixed frame, and the first nut is movably arranged on the other of the first swing frame and the fixed frame and can drive the first swing frame to swing up and down relative to the fixed frame; the first swing frame is movably pivoted with a second swing frame, a second lead screw and a second nut matched with the second lead screw are arranged between the first swing frame and the second swing frame, the second lead screw is only rotatably arranged on one of the first swing frame and the second swing frame, and the second nut is movably arranged on the other of the first swing frame and the second swing frame and can drive the second swing frame to swing left and right relative to the first swing frame; and the second swing frame is connected with a mounting plate for mounting the projection equipment.

The bracket for projection provided by the embodiment of the utility model at least has the following beneficial effects:

the support for projection of above structure is through rotating first lead screw, and first nut removes and drives first swing span relative mount luffing motion relative to first lead screw, and through rotating the second lead screw, the second nut removes and drives the relative first swing span horizontal hunting of second swing span relative to the second lead screw, and first lead screw and second lead screw all can only rotate and can not take place axial displacement to can accurately adjust the swing angle of projection equipment on the mounting panel, adjust simple swift moreover.

In some embodiments of the present invention, the first lead screw is only rotatably disposed on the first swing frame, the fixed frame is provided with a first movable groove for accommodating the first nut, the first nut is not rotatable relative to the first movable groove, and the first nut moves relative to the first lead screw to abut against a sidewall of the first movable groove to drive the first swing frame to swing up and down relative to the fixed frame.

In some embodiments of the present invention, the second lead screw is only rotatably disposed on the first swing frame, a second movable groove for accommodating the second nut is disposed on the second swing frame, the second nut is not rotatable relative to the second movable groove, and the second nut moves relative to the second lead screw to abut against a sidewall of the second movable groove to drive the second swing frame to swing left and right relative to the first swing frame.

In some embodiments of the present invention, the mounting plate is connected to the second swing frame by a translational adjustment device capable of driving the mounting plate to move left and right and/or front and back relative to the second swing frame.

In some embodiments of the present invention, the translational adjustment device includes a first movable plate movably disposed on the mounting plate and movable back and forth relative thereto, and the first movable plate is connected to the mounting plate through a first linear mechanism; the first movable plate is movably provided with a second movable plate which can move left and right relative to the first movable plate, the second movable plate is connected with the second swing frame, and the second movable plate is connected with the first movable plate through a second linear mechanism.

In some embodiments of the present invention, the first linear mechanism includes a third lead screw rotatably disposed on the mounting plate and extending in a front-back direction, the mounting plate is provided with a first threaded hole in threaded connection with the third lead screw, the second linear mechanism includes a fourth lead screw rotatably disposed on the first movable plate and extending in a left-right direction, the second movable plate is provided with a second threaded hole in threaded connection with the fourth lead screw, the first lead screw, the second lead screw, the third lead screw and the fourth lead screw are respectively connected to a rotation driver for driving the rotation of the first lead screw, the second lead screw, the third lead screw and the fourth lead screw, and each rotation driver is electrically connected to the same control module.

In some embodiments of the present invention, the suspension rod assembly includes a fixed rod, the first mounting structure is disposed at an upper end of the fixed rod, a movable rod is telescopically connected to a lower end of the fixed rod, an adjusting screw is rotatably disposed on the movable rod, and a third threaded hole matched with the adjusting screw is disposed on the fixed rod.

In some embodiments of the present invention, the first mounting structure includes a mounting plate, the mounting plate is provided with a plurality of through holes for the bolt assembly to pass through, the upper end of the fixing rod is rotatably connected to the mounting plate, the outside of the fixing rod is provided with an external thread, and the external thread is connected to a threaded sleeve capable of being tightly pressed against the mounting plate.

In some embodiments of the present invention, at least two connection plates are movably disposed on the mounting plate, second mounting structures for connecting projection equipment are disposed on the connection plates, an adjusting mechanism capable of adjusting relative positions of the connection plates and the mounting plate is disposed between the connection plates and the mounting plate, and the adjusting mechanism is capable of adjusting a distance between the second mounting structures on the adjacent connection plates.

In some embodiments of the present invention, the adjusting mechanism includes a long hole opened on the connecting plate, a circular arc guide hole opened on the mounting plate and opposite to the long hole, and a first fastening member penetrated through the circular arc guide hole and the long hole.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic external view of one embodiment of a stand for projection according to the present invention;

FIG. 2 is a schematic structural view of the embodiment of FIG. 1 with the first protective cover and the second protective cover removed;

FIG. 3 is a schematic view of the connection of the fixed frame, the first swing frame and the second swing frame of the embodiment of FIG. 1;

FIG. 4 is a schematic view of the cross-sectional structure A-A of FIG. 3;

FIG. 5 is a schematic view of the cross-sectional structure B-B of FIG. 3;

FIG. 6 is a schematic view of the translation adjusting device of the embodiment of FIG. 1 in combination with a mounting plate;

fig. 7 is an exploded view of the boom assembly of the embodiment of fig. 1.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the positional or orientational descriptions referred to, for example, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are based on the positional or orientational relationships shown in the drawings and are for convenience of description and simplicity of description only, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 5, a stand for projection according to an embodiment of the present invention includes: the suspension rod assembly 100, the upper end of the suspension rod assembly 100 is provided with a first mounting structure, the lower end of the suspension rod assembly 100 is provided with a fixed frame 210, the fixed frame 210 is movably pivoted with a first swing frame 220, a first lead screw 230 and a first nut 240 matched with the first lead screw 230 are arranged between the first swing frame 220 and the fixed frame 210, the first lead screw 230 is only rotatably arranged on one of the first swing frame 220 and the fixed frame 210, and the first nut 240 is movably arranged on the other of the first swing frame 220 and the fixed frame 210 and can drive the first swing frame 220 to swing up and down relative to the fixed frame 210; the first swing frame 220 is movably pivoted with a second swing frame 250, a second lead screw 260 and a second nut 270 matched with the second lead screw 260 are arranged between the first swing frame 220 and the second swing frame 250, the second lead screw 260 is only rotatably arranged on one of the first swing frame 220 and the second swing frame 250, and the second nut 270 is movably arranged on the other of the first swing frame 220 and the second swing frame 250 and can drive the second swing frame to swing left and right relative to the first swing frame 220; a mounting plate 300 for mounting the projection apparatus is attached to the second swing frame 250.

The projection bracket with the structure drives the first swing frame 220 to swing up and down relative to the fixed frame 210 by rotating the first lead screw 230, the first nut 240 moves relative to the first lead screw 230, the second nut 270 moves relative to the second lead screw 260 and drives the second swing frame 250 to swing left and right relative to the first swing frame 220 by rotating the second lead screw 260, and the first lead screw 230 and the second lead screw 260 can only rotate without axial movement, so that the swing angle of the projection equipment on the mounting plate 300 can be accurately adjusted, and the adjustment is simple and quick.

The first lead screw 230 and the second lead screw 260 may be rotated manually or driven to rotate by an electric device.

Referring to fig. 3 and 4, in some embodiments of the present invention, the first lead screw 230 is only rotatably disposed on the first swing frame 220, the fixed frame 210 is provided with a first movable groove 211 for accommodating the first nut 240, the first nut 240 is not rotatable relative to the first movable groove 211, and the first nut 240 moves relative to the first lead screw 230 to abut against a sidewall of the first movable groove 211 to drive the first swing frame 220 to swing up and down relative to the fixed frame 210.

When the first lead screw 230 rotates, the first nut 240 moves axially relative to the first lead screw 230, the first nut 240 abuts against the side wall of the first movable groove 211 to push the fixed frame 210, and the first swing frame 220 swings upwards or downwards relative to the fixed frame 210 under a reaction force, wherein the first lead screw 230 can only rotate relative to the first swing frame 220 and cannot move telescopically relative to the first swing frame 220, so that the operation of a user is facilitated, and the first lead screw 230 cannot interfere with an electric wire or other parts when extending outwards.

Referring to fig. 4, taking the first lead screw 230 as an example to drive the first nut 240 to move forward, at this time, the first nut 240 abuts against the front side wall of the first movable groove 211, and the first swing frame 220 swings downward relative to the fixed frame 210 under a reaction force, in this process, the first nut 240 can swing downward in the first movable groove 211, so that a space (or a virtual position of movement) for the first nut 240 to swing upward or downward is provided in the first movable groove 211. Similarly, when the first lead screw 230 drives the first nut 240 to move backward, the first nut 240 abuts against the rear sidewall of the first movable groove 211, and the first swing frame 220 swings upward relative to the fixed frame 210 under a reaction force.

Referring to fig. 5, in some embodiments of the present invention, the second lead screw 260 is only rotatably disposed on the first swing frame 220, the second swing frame 250 is provided with a second movable groove 251 for accommodating the second nut 270, the second nut 270 is not rotatable relative to the second movable groove 251, and the second nut 270 moves relative to the second lead screw 260 to abut against a sidewall of the second movable groove 251 to drive the second swing frame 250 to swing left and right relative to the first swing frame 220.

When the second lead screw 260 rotates, the second nut 270 moves axially relative to the second lead screw 260, and the second nut 270 abuts against the side wall of the second movable groove 251 to enable the second swing frame 250 to swing leftwards or rightwards relative to the first swing frame 220, wherein the second lead screw 260 can only rotate relative to the first swing frame 220 and cannot move telescopically relative to the first swing frame 220, so that the operation of a user is facilitated, and the second lead screw 260 cannot interfere with an electric wire or other parts when extending outwards.

Referring to fig. 3 and 5, for example, the second lead screw 260 drives the second nut 270 to move leftward, when the second nut 270 abuts against the left side wall of the second movable groove 251, the second swing frame 250 swings leftward relative to the first swing frame 220, and in the process, the second nut 270 can swing in the second movable groove 251, so that a space or a virtual position for the second nut 270 to move is provided in the second movable groove 251. Similarly, when the second lead screw 260 drives the second nut 270 to move rightward, the second nut 270 abuts against the right side wall of the second movable groove 251, and the second swing frame 250 swings rightward relative to the first swing frame 220.

Referring to fig. 2 and 6, in some embodiments of the present invention, in order to extend the adjustment range of the mounting plate 300, the mounting plate 300 is connected to the second swing frame 250 by a translational adjustment device 400, and the translational adjustment device 400 can drive the mounting plate 300 to move left and right and/or back and forth relative to the second swing frame 250. When the translation adjusting device 400 drives the mounting plate 300 to move back and forth relative to the boom assembly 100, the projection equipment can be close to or far away from the projection curtain, so that the size of the image is adjusted; accordingly, when the translational adjustment mechanism 400 actuates the mounting plate 300 to move left and right relative to the boom assembly 100, the projection device can be moved left or right relative to the projection screen.

Referring to fig. 6, in some embodiments of the present invention, the translational adjustment device 400 includes a first movable plate 410 movably disposed on the mounting plate 300 and movable back and forth relative thereto, the first movable plate 410 being connected to the mounting plate 300 by a first linear mechanism 420; the first movable plate 410 is movably provided with a second movable plate 430 capable of moving left and right relative to the first movable plate 410, the second movable plate 430 is connected with the second swing frame 250, and the second movable plate 430 is connected with the first movable plate 410 through a second linear mechanism 440. The translational adjustment device 400 can drive the mounting plate 300 to move left and right and back and forth relative to the second swing frame 250.

Of course, the translational adjustment device 400 may be provided with only one portion capable of driving the mounting plate 300 to move left and right relative to the second swing frame 250, or only one portion capable of driving the mounting plate 300 to move back and forth relative to the second swing frame 250, according to the use requirement.

Referring to fig. 6, in some embodiments of the present invention, the first linear mechanism 420 includes a third lead screw rotatably disposed on the mounting plate 300 and extending in the front-rear direction, a first threaded hole threadedly coupled to the third lead screw is disposed on the mounting plate 300, the second linear mechanism 440 includes a fourth lead screw rotatably disposed on the first movable plate 410 and extending in the left-right direction, and a second threaded hole threadedly coupled to the fourth lead screw is disposed on the second movable plate 430, and by the above structure, precise displacement adjustment of the mounting plate 300 in the left-right direction and the front-rear direction can be achieved; in order to further improve the precision and convenience of adjustment, the first lead screw 230, the second lead screw 260, the third lead screw and the fourth lead screw are respectively connected with a rotation driver 500 for driving the first lead screw, the second lead screw, the third lead screw and the fourth lead screw to rotate, and each rotation driver 500 is electrically connected with the same control module. The rotation driver 500 is a servo motor electrically connected to the control module, and the control module can control the rotation direction and the number of rotations of the servo motor to control the distance and the direction of the linear motion. In some embodiments, the control module includes a wireless receiving module, and the up-and-down swing, the left-and-right swing, the front-and-back movement, and the left-and-right movement of the projection device can be adjusted through an external device such as a mobile phone or a remote controller. Of course, in some other embodiments, in order to facilitate the manual rotation of the first lead screw 230, the second lead screw 260, the third lead screw and the fourth lead screw, the first lead screw 230, the second lead screw 260, the third lead screw and the fourth lead screw are all provided with a knob.

Referring to fig. 1, preferably, in order to achieve the dustproof and aesthetic effects, a first protective cover 710 is disposed outside the translation adjusting device 400, and a second protective cover 720 is disposed outside the fixed frame 210, the first swing frame 220, and the second swing frame 230.

Referring to fig. 7, in some embodiments of the present invention, in order to achieve displacement adjustment of the mounting plate 300 in the height direction, the boom assembly 100 includes a fixed rod 110, the first mounting structure is disposed at an upper end of the fixed rod 110, a movable rod 120 is telescopically connected to a lower end of the fixed rod 110, an adjusting screw 130 is rotatably disposed on the movable rod 120, and a third threaded hole matched with the adjusting screw 130 is disposed on the fixed rod 110.

Referring to fig. 7, in some embodiments of the present invention, in order to enable the mounting plate 300 and the whole assembly of all the components thereon to swing in the left-right direction with respect to the boom assembly 100, thereby increasing the adjusting function of the projection bracket of the present invention, the first mounting structure includes a mounting plate 101, the mounting plate 101 is provided with a plurality of through holes 102 for the bolt assembly to pass through, the upper end of the fixing rod 110 is rotatably connected to the mounting plate 101, the fixing rod 110 is provided with an external thread 111 on the outside, and the external thread 111 is connected to a threaded sleeve 140 capable of being tightly pressed against the mounting plate 101. When the fixing rod 110 needs to be adjusted to rotate relative to the mounting disc 101, only the threaded sleeve 140 needs to be rotated on the external thread 111 and is far away from the mounting disc 101, at this time, the fixing rod 110 can rotate freely relative to the mounting disc 101, and after the fixing rod 110 rotates a certain angle relative to the mounting disc 101, the threaded sleeve 140 is rotated again and the threaded sleeve 140 abuts against the mounting disc 101 tightly, so that the deflection of the mounting plate 300 on the horizontal plane is realized, and further the projection device can rotate horizontally leftwards or rightwards.

Referring to fig. 1 and 6, in some embodiments of the present invention, at least two connection plates 600 are movably disposed on the mounting plate 300, a second mounting structure 610 for connecting a projection device is disposed on the connection plate 600, an adjusting mechanism 620 capable of adjusting the relative position between the connection plate 600 and the mounting plate 300 is disposed between the connection plate 600 and the mounting plate 300, and the adjusting mechanism 620 is capable of adjusting the distance between the second mounting structures 610 on the adjacent connection plates 600. The position of the connecting plate 600 on the mounting plate 300 is adjusted through the adjusting mechanism 620 by the support for projection, so that the distance between the adjacent connecting plates 600 is adjusted, the relative position between the second mounting structures 610 on the connecting plates 600 is adjusted to adapt to projection equipment with different sizes, the adaptability is strong, and the installation is convenient.

Referring to fig. 6, in some embodiments of the present invention, the adjusting mechanism 620 includes an elongated hole 621 formed in the connecting plate 600, a circular arc guide hole 622 formed in the mounting plate 300 and opposite to the elongated hole 621, and a first fastening member 623 disposed through the circular arc guide hole 622 and the elongated hole 621. The first fastening member 623 is a bolt assembly, and in order to facilitate manual rotation of the first fastening member 623, a knob is arranged at the end of the first fastening member 623, after the first fastening member 623 is unscrewed, the connecting plates 600 can be moved relative to the mounting plate 300, so that the distance between the second mounting structures 610 on two adjacent connecting plates 600 can be adjusted, and then the first fastening member 623 is screwed down to fix the corresponding connecting plate 600, so that projection equipment with different sizes can be mounted in a matching manner. The first fastening member 623 can move along the circular arc guide hole 622 to deflect the connecting plate 600 relative to the mounting plate 300, and the elongated hole 621 on the connecting plate 600 can also move relative to the first fastening member 623 to extend and retract the connecting plate 600 relative to the mounting plate 300, so as to expand the adjustable range of the second mounting structure 610 on the connecting plate 600, thereby adapting to more projection devices.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A support for projection, comprising:

the suspension rod assembly (100), a first mounting structure is arranged at the upper end of the suspension rod assembly (100), a fixed frame (210) is arranged at the lower end of the suspension rod assembly (100), a first swing frame (220) is movably pivoted on the fixed frame (210), a first lead screw (230) and a first nut (240) matched with the first lead screw (230) are arranged between the first swing frame (220) and the fixed frame (210), the first lead screw (230) is only rotatably arranged on one of the first swing frame (220) and the fixed frame (210), and the first nut (240) is movably arranged on the other of the first swing frame (220) and the fixed frame (210) and can drive the first swing frame (220) to swing up and down relative to the fixed frame (210);

the first swing frame (220) is movably pivoted with a second swing frame (250), a second lead screw (260) and a second nut (270) matched with the second lead screw (260) are arranged between the first swing frame (220) and the second swing frame (250), the second lead screw (260) is only rotatably arranged on one of the first swing frame (220) and the second swing frame (250), and the second nut (270) is movably arranged on the other of the first swing frame (220) and the second swing frame (250) and can drive the second swing frame to swing left and right relative to the first swing frame (220);

the second swing frame (250) is connected with a mounting plate (300) for mounting the projection equipment.

2. A support for projection according to claim 1, wherein:

the first lead screw (230) is only rotatably arranged on the first swinging frame (220), a first movable groove (211) used for accommodating the first nut (240) is formed in the fixed frame (210), the first nut (240) cannot rotate relative to the first movable groove (211), and the first nut (240) moves relative to the first lead screw (230) to abut against the side wall of the first movable groove (211) so as to drive the first swinging frame (220) to swing up and down relative to the fixed frame (210).

3. A support for projection according to claim 1, wherein:

the second lead screw (260) is only rotatably arranged on the first swing frame (220), a second movable groove (251) used for accommodating the second nut (270) is formed in the second swing frame (250), the second nut (270) cannot rotate relative to the second movable groove (251), and the second nut (270) moves relative to the second lead screw (260) to abut against the side wall of the second movable groove (251) to drive the second swing frame (250) to swing left and right relative to the first swing frame (220).

4. A support for projection according to claim 1, wherein:

the mounting plate (300) is connected to the second swing frame (250) through a translation adjusting device (400), and the translation adjusting device (400) can drive the mounting plate (300) to move left and right and/or move front and back relative to the second swing frame (250).

5. A support for projection according to claim 4, characterized in that:

the translation adjusting device (400) comprises a first movable plate (410) which is movably arranged on the mounting plate (300) and can move back and forth relative to the mounting plate, and the first movable plate (410) is connected with the mounting plate (300) through a first linear mechanism (420); the first movable plate (410) is movably provided with a second movable plate (430) which can move left and right relative to the first movable plate, the second movable plate (430) is connected with the second swinging frame (250), and the second movable plate (430) is connected with the first movable plate (410) through a second linear mechanism (440).

6. A support for projection according to claim 5, wherein:

first linear mechanism (420) is including only rotating the setting and being in just following the third lead screw that the fore-and-aft direction extends on mounting panel (300), be equipped with on mounting panel (300) with third lead screw threaded connection's first screw hole, second linear mechanism (440) is including only rotating the setting and being in on first fly leaf (410) and along the fourth lead screw that left right direction extends, be equipped with on second fly leaf (430) with fourth lead screw threaded connection's second screw hole, first lead screw (230) second lead screw (260) third lead screw with the fourth lead screw is connected with its pivoted rotation driver (500) of a drive respectively, each rotation driver (500) all with same control module electric connection.

7. A support for projection according to claim 1, wherein:

the suspension rod assembly (100) comprises a fixing rod (110), a first mounting structure is arranged at the upper end of the fixing rod (110), the lower end of the fixing rod (110) is connected with a movable rod (120) in a telescopic mode, an adjusting screw rod (130) is arranged on the movable rod (120) in a rotating mode, and a third threaded hole matched with the adjusting screw rod (130) is formed in the fixing rod (110).

8. A support for projection according to claim 7, wherein:

first mounting structure includes mounting disc (101), set up a plurality of fenestrations (102) that supply bolt assembly to wear to establish on mounting disc (101), the upper end rotatable coupling of dead lever (110) is in on mounting disc (101), the outside of dead lever (110) is equipped with external screw thread (111), be connected with on external screw thread (111) can push up tightly threaded sleeve (140) on mounting disc (101).

9. A support for projection according to claim 1, wherein:

the activity is provided with two at least connecting plates (600) on mounting panel (300), be equipped with second mounting structure (610) that are used for connecting projection equipment on connecting plate (600), connecting plate (600) with be equipped with adjustable two relative position's adjustment mechanism (620) between mounting panel (300), adjustment mechanism (620) can adjust adjacently on connecting plate (600) distance between second mounting structure (610).

10. A support for projection as claimed in claim 9, wherein:

adjustment mechanism (620) is including offering rectangular hole (621) on connecting plate (600), offering on mounting panel (300) and with circular arc guiding hole (622) that rectangular hole (621) is relative and wear to establish circular arc guiding hole (622) with first fastener (623) on the rectangular hole (621).

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