A conveniently adjustable projection device

Abstract

The present invention relates to the technical field of projection equipment, and discloses a projection device that is easy to adjust, including a mounting horizontal plate, a connecting rod is fixedly mounted on the bottom of the mounting horizontal plate, a reinforcing rod is fixedly mounted on the right side of the connecting rod with one end fixedly connected to the bottom of the mounting horizontal plate, and the interior of the connecting rod is movably connected to a placement horizontal plate with one end penetrating and extending to the right side of the connecting rod and located below the reinforcing rod through a rotating shaft. The projection device that is easy to adjust, by setting a movable push rod, the projection box is fixed on the placement horizontal plate through a fixing ring, and the placement horizontal plate is movably connected to the connecting rod, the servo motor is started to drive the eccentric wheel to rotate, so that the end of the eccentric wheel away from the servo motor moves up and down, and the movable push rod is driven to move up and down by the movable support rod, and the placement horizontal plate is shifted downward accordingly, and the projection angle of the projection box is adjusted. It can be adjusted during actual use, making the projection box more convenient to use.

Description

Technical Field

[0001] The present invention relates to the technical field of projection equipment, and in particular to a projection device which is convenient to adjust. Background Art

[0002] A projector, also known as a projector, is a device that can project images or videos onto a screen. It can be connected to computers, VCDs, DVDs, BDs, game consoles, and DVs through different interfaces to play corresponding video signals. Projectors are currently widely used in homes, offices, schools, and entertainment venues. Depending on the working method, there are different types such as CRT, LCD, and DLP.

[0003] Existing projectors are mostly fixed during use, so the projected position is also fixed. During use, the projection range of the projector cannot be adjusted according to usage requirements, which is very inconvenient to use. Therefore, a projection device that is easy to adjust is proposed to solve the above problems. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the shortcomings of the prior art, the present invention provides a projection device that is easily adjustable and has the advantage of being easily adjustable. It solves the problem that the existing projectors are mostly fixed during use, so the projected position is also fixed, and the projection range of the projector cannot be adjusted according to usage requirements during use, which is very inconvenient to use.

[0006] (II) Technical solution

[0007] The cam is secured to the bottom of the unit and is easily adjustable, and the cam is secured on a secure basis for the user to use the device for securing the cam to the bottom of the unit.

[0008] A mounting groove is provided on the front side of the projection box, in which a projection lens located on the projection box is fixedly installed, mounting cavities provided on the projection box are fixedly installed on both sides of the mounting groove, a connecting block with one end extending into the mounting groove is movably installed in the mounting cavity, a shielding plate is fixedly installed on the opposite side of the connecting block, a pull rope with one end penetrating and extending to the outside of the projection box is fixedly installed on the side of the connecting block away from the shielding plate, the side of the pull rope away from the projection box is wound around a pulley located on the side of the projection box, a compression spring is sleeved on the outside of the pull rope, a forward and reverse motor is fixedly installed on the inner side of the pulley, and mounting seats located on the left and right side walls of the projection box are fixedly installed on the bottom of the pulley.

[0009] Preferably, a through hole connected to the pull rope and located on the projection box is formed on the inner cavity side wall of the installation cavity away from the installation groove.

[0010] Preferably, the reinforcing rod is arranged obliquely between the mounting cross plates, and the angle of the reinforcing rod is not less than fifteen degrees.

[0011] Preferably, mounting holes adapted to the connection block and located on the projection box are provided on the inner cavity side walls on the opposite side of the mounting cavity.

[0012] Preferably, the diameter of the compression spring is smaller than the diameter of the connecting block, and the diameter of the connecting block is smaller than the diameter of the mounting cavity.

[0013] Preferably, a through hole matching the movable push rod is formed at the top of the inner cavity of the fixed sleeve rod.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the present invention provides a projection device that is easy to adjust and has the following beneficial effects:

[0016] 1. The projection device which is convenient to adjust is provided with a movable push rod, the projection box is fixed on the placement horizontal plate through a fixing ring, and the placement horizontal plate is movably connected with the connecting rod, the servo motor is started to drive the eccentric wheel to rotate, so that the end of the eccentric wheel away from the servo motor moves up and down, and the movable push rod is driven to move up and down by the movable support rod, and the placement horizontal plate is shifted downward accordingly, so as to adjust the projection angle of the projection box, which can be adjusted during actual use, making the projection box more convenient to use.

[0017] 2. The projection device which is easy to adjust is provided with a shielding plate. The forward and reverse motors are started to drive the pulley to rotate forward or reversely, and the pull rope is tightened or loosened. The compression spring is compressed or opened accordingly to drive the shielding plate to move from the middle to both sides or from both sides to the middle. The distance from the shielding plate to the projection lens is adjusted, thereby controlling the projection range of the projection lens, making it convenient to adjust in the actual process, and further facilitating the use of the projection box. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 It is a schematic diagram of the front structure of the projection box of the present invention.

[0021] In the figure: 1 installing the horizontal plate, 2 connecting rod, 3 reinforcing rod, 4 rotating shaft, 5 placing the horizontal plate, 6 fixing ring, 7 projection box, 8 fixing bottom plate, 9 fixing sleeve rod, 10 eccentric wheel, 11 servo motor, 12 movable support rod, 13 movable push rod, 14 mounting groove, 15 projection lens, 16 mounting cavity, 17 connecting block, 18 shielding plate, 19 pull rope, 20 pulley, 21 compression spring, 22 forward and reverse motor, 23 mounting seat. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-3A projection device that is easy to adjust comprises a mounting cross plate 1, a connecting rod 2 is fixedly installed at the bottom of the mounting cross plate 1, a reinforcing rod 3 with one end fixedly connected to the bottom of the mounting cross plate 1 is fixedly installed on the right side of the connecting rod 2, the reinforcing rod 3 is inclinedly arranged between the mounting cross plate 1 and the mounting cross plate 1, and the angle of the reinforcing rod 3 is not less than fifteen degrees, the interior of the connecting rod 2 is movably connected to a placement cross plate 5 with one end penetrating and extending to the right side of the connecting rod 2 and located below the reinforcing rod 3 through a rotating shaft 4, a fixing ring 6 is fixedly installed on the top of the placement cross plate 5, a projection box 7 located at the top of the placement cross plate 5 is fixedly installed inside the fixing ring 6, a fixing bottom plate 8 fixedly connected to the right side of the connecting rod 2 is fixedly installed below the placement cross plate 5, a fixing sleeve rod 9 is fixedly installed on the top of the fixing bottom plate 8, an eccentric wheel 10 is movably installed on the right side of the inner cavity of the fixing sleeve rod 9, and an eccentric wheel 10 is movably installed on the right side of the inner cavity of the fixing sleeve rod 9. The axis of the center wheel 10 is fixedly connected to the output shaft of the servo motor 11, and a movable support rod 12 is fixedly installed on the top of the eccentric wheel 10 away from the servo motor 11. A movable push rod 13 with one end penetrating and extending to the bottom of the placement cross plate 5 is fixedly installed on the top of the movable support rod 12. A through hole compatible with the movable push rod 13 is opened on the top of the inner cavity of the fixed sleeve rod 9. The projection box 7 is fixed on the placement cross plate 5 through the fixing ring 6, and the placement cross plate 5 is movably connected with the connecting rod 2. The servo motor 11 starts to drive the eccentric wheel 10 to rotate, so that the end of the eccentric wheel 10 away from the servo motor 11 moves up and down, and the movable push rod 13 is driven up and down by the movable support rod 12, and the placement cross plate 5 moves downward accordingly. The projection angle of the projection box 7 can be adjusted, which can be adjusted during actual use, making the projection box 7 more convenient to use.

[0024] A mounting groove 14 is provided on the front of the projection box 7, in which a projection lens 15 located on the projection box 7 is fixedly installed, mounting cavities 16 provided on the projection box 7 are fixedly installed on both sides of the mounting groove 14, a connecting block 17 with one end extending into the mounting groove 14 is movably installed in the mounting cavity 16, a mounting hole which is adapted to the connecting block 17 and is located on the projection box 7 is provided on the inner cavity side wall on the opposite side of the mounting cavity 16, a shielding plate 18 is fixedly installed on the opposite side of the connecting block 17, a pull rope 19 which has one end penetrating and extending to the outside of the projection box 7 is fixedly installed on the side of the connecting block 17 away from the shielding plate 18, a through hole which is located on the projection box 7 and matches the pull rope 19 is provided on the inner cavity side wall of the mounting cavity 16 away from the mounting groove 14, and a through hole which is located on the projection box 7 and matches the pull rope 19 is provided on the inner cavity side wall of the mounting cavity 16 away from the mounting groove 14. The side is wound around the pulley 20 located on the side of the projection box 7, and a compression spring 21 is installed on the outside of the pull rope 19. The diameter of the compression spring 21 is smaller than the diameter of the connecting block 17, and the diameter of the connecting block 17 is smaller than the diameter of the mounting cavity 16. A forward and reverse motor 22 is fixedly installed on the inner side of the pulley 20, and a mounting seat 23 located on the left and right side walls of the projection box 7 is fixedly installed on the bottom of the pulley 20. The forward and reverse motor 22 is started to drive the pulley 20 to rotate forward or reverse, tighten or loosen the pull rope 19, and the compression spring 21 is compressed or opened accordingly to drive the baffle plate 18 to move from the middle to the sides or from the sides to the middle, so as to adjust the distance from the baffle plate 18 to the projection lens 15, thereby controlling the projection range of the projection lens 15, facilitating adjustment in the actual process, and further facilitating the use of the projection box 7.

[0025] In summary, the projection device that is convenient to adjust is provided with a movable push rod 13, the projection box 7 is fixed on the placement horizontal plate 5 through the fixing ring 6, and the placement horizontal plate 5 is movably connected with the connecting rod 2, and the servo motor 11 is started to drive the eccentric wheel 10 to rotate, so that the end of the eccentric wheel 10 away from the servo motor 11 moves up and down, and the movable push rod 13 is driven to move up and down by the movable support rod 12, and the placement horizontal plate 5 is shifted downward accordingly, and the projection angle of the projection box 7 is adjusted, which can be adjusted during actual use, making the projection box 7 more convenient to use, and by providing a shielding plate 18, the forward and reverse motor 2 The pulley 20 is started to rotate forward or reverse, the pull rope 19 is tightened or loosened, and the compression spring 21 is compressed or opened accordingly to drive the shielding plate 18 to move from the middle to the two sides or from the two sides to the middle, and the distance from the shielding plate 18 to the projection lens 15 is adjusted, thereby controlling the projection range of the projection lens 15, which is convenient for adjustment in the actual process, further facilitating the use of the projection box 7, and solving the problem that the existing projectors are mostly fixed during use, so the projected position is also fixed, and the projection range of the projector cannot be adjusted according to the use requirements during use, which is very inconvenient to use.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A projection device that is easily adjustable, comprising a mounting plate (1), characterized in that: The bottom of the mounting cross plate (1) A connecting rod (2) is fixedly installed, and a reinforcing rod (3) having one end fixedly connected to the bottom of the installation horizontal plate (1) is fixedly installed on the right side of the connecting rod (2). The interior of the connecting rod (2) is movably connected to a placement horizontal plate (5) having one end penetrating and extending to the right side of the connecting rod (2) and located below the reinforcing rod (3) through a rotating shaft (4). A fixing ring (6) is fixedly installed on the top of the placement horizontal plate (5). A projection box (7) located on the top of the placement horizontal plate (5) is fixedly installed inside the fixing ring (6). The bottom of the placement horizontal plate (5) is fixedly installed A fixed base plate (8) is fixedly connected to the right side of the connecting rod (2), a fixed sleeve rod (9) is fixedly installed on the top of the fixed base plate (8), an eccentric wheel (10) is movably installed on the right side of the inner cavity of the fixed sleeve rod (9), the axis of the eccentric wheel (10) is fixedly connected to the output shaft of the servo motor (11), a movable support rod (12) is fixedly installed on the top of the eccentric wheel (10) away from the servo motor (11), and a movable push rod (13) is fixedly installed on the top of the movable support rod (12) with one end penetrating and extending to the bottom of the horizontal plate (5); The projection box (7) is provided with a mounting groove (14) on the front side, a projection lens (15) located on the projection box (7) is fixedly installed in the mounting groove (14), mounting cavities (16) provided on the projection box (7) are fixedly installed on both sides of the mounting groove (14), a connecting block (17) having one end extending into the mounting groove (14) is movably installed in the mounting cavity (16), a shielding plate (18) is fixedly installed on the opposite side of the connecting block (17), and the connecting block (17) is away from the shielding plate A pull rope (19) having one end penetrating and extending to the outside of the projection box (7) is fixedly installed on one side of the plate (18); a side of the pull rope (19) away from the projection box (7) is wound around a pulley (20) located on the side of the projection box (7); a compression spring (21) is sleeved on the outside of the pull rope (19); a forward and reverse motor (22) is fixedly installed on the inside of the pulley (20); and a mounting seat (23) located on the left and right side walls of the projection box (7) is fixedly installed on the bottom of the pulley (20); A through hole connected to the pull rope (19) and located on the projection box (7) is provided on the inner cavity side wall of the installation cavity (16) away from the installation groove (14); The reinforcing rod (3) is arranged obliquely between the mounting cross plates (1) and the angle of the reinforcing rod (3) is not less than fifteen degrees.

2. The conveniently adjustable projection device according to claim 1, characterized in that: The inner cavity side wall on the opposite side of the installation cavity (16) is provided with an installation hole which is matched with the connection block (17) and is located on the projection box (7).

3. The conveniently adjustable projection device according to claim 1, characterized in that: The diameter of the compression spring (21) is smaller than the diameter of the connection block (17), and the diameter of the connection block (17) is smaller than the diameter of the installation cavity (16).

4. The conveniently adjustable projection device according to claim 1, characterized in that: A through hole matching the movable push rod (13) is provided at the top of the inner cavity of the fixed sleeve rod (9).

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