Multimedia projection device with lifting structure

Abstract

The utility model discloses a multimedia projection device with a lifting structure, which relates to the field of multimedia projection devices and comprises a projector body, a bottom shell and a bottom cover, the bottom shell is fixedly arranged on the lower side of the projector body, and the bottom cover is horizontally arranged under the bottom shell. Two X-shaped hinge rods which are symmetrically distributed front and back are arranged in the bottom shell, each X-shaped hinge rod is formed by rotationally connecting the middles of two long-strip rods through a rotating shaft, a first fixing block and a second fixing block are rotationally arranged at the two ends of the left side of each X-shaped hinge rod through a first shaft pin and a second shaft pin correspondingly, and the first fixing blocks and the second fixing blocks are symmetrically arranged in the bottom shell. The first fixing block is fixedly connected with the left side of the upper inner side wall of the bottom shell, and the second fixing block is fixedly connected with the left side of the upper surface of the bottom cover. According to the utility model, the height of the projector main body can be adjusted conveniently, so that the projector main body can project onto a curtain accurately, and people can use the projector conveniently.

Description

Technical Field

[0001] The utility model belongs to the technical field of multimedia projection devices, in particular to a multimedia projection device with a lifting structure. Background Art

[0002] Multimedia, in a computer system, is a human-computer interactive information exchange and communication medium that combines two or more media. The media used include text, pictures, photos, sounds (including music, voice narration, special sound effects), animations and videos, as well as interactive functions provided by the program. Multimedia works are distributed through CDs and the Internet.

[0003] At present, multimedia technology is often used in people's life and work, and people often use multimedia projection equipment to display materials at work. Different companies install projection screens at different heights, and the height is fixed after the screen is installed. At the same time, the heights of conference tables in different companies are also different, so the placement heights of multimedia projectors are also different, which makes it difficult for the projector to accurately project images onto the screen. Therefore, a multimedia projection device with a built-in lifting structure is proposed. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a multimedia projection device with a lifting structure, which effectively solves the problem that people often use multimedia projection equipment to enter and exit materials for projection display at work, and different companies install projection screens at different heights, and the height is fixed after the screen is installed. At the same time, the heights of conference tables in different companies are also different, so the placement heights of multimedia projectors are also different, which makes it difficult for the projector to accurately project images onto the screen.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multimedia projection device with a self-lifting structure, comprising a projector body, a bottom shell and a bottom cover, wherein the bottom shell is fixedly arranged at the lower side of the projector body, the bottom cover is horizontally arranged just below the bottom shell, and two X-shaped hinged rods symmetrically distributed front and back are arranged inside the bottom shell, the X-shaped hinged rod is composed of two long bars connected by a rotating shaft in the middle, and the left ends of each of the X-shaped hinged rods are respectively rotatably arranged with a first fixed block and a second fixed block through a first shaft pin and a second shaft pin, the first fixed block ... The fixed block is fixedly connected to the left side of the upper inner wall of the bottom shell, the second fixed block is fixedly connected to the left side of the upper surface of the bottom cover, the two ends of the right side of each X-shaped hinged rod are rotatably connected with a connecting block and a T-shaped slider through a third axle pin and a fourth axle pin, a longitudinal plate is slidably arranged inside the bottom shell through a guide mechanism, the two connecting blocks are fixedly connected to the lower side of the longitudinal plate, two transversely arranged T-shaped slide rails are fixedly arranged on the upper surface of the bottom cover, the two T-shaped slide blocks are slidably connected to the two T-shaped slide rails, and an active clamping mechanism for clamping the longitudinal plate is arranged on the upper part of the interior of the bottom shell.

[0006] Preferably, the guide mechanism includes a group of guide round rods, and a group of transversely arranged guide round holes are provided at the beginning of the side wall of the longitudinal plate. Two of the guide round rods are respectively inserted into the two guide round holes for transverse sliding, and the left and right ends of each of the guide round rods are respectively fixedly connected to the left and right sides of the bottom shell.

[0007] Preferably, the number of the guide round rods and the number of the guide round holes are both set to two, and the two guide round rods are symmetrically distributed front to back.

[0008] Preferably, the movable clamping mechanism includes a transverse plate, a plurality of first ratchets and a second ratchet, the transverse plate being transversely arranged above the interior of the bottom shell and above the longitudinal plate, the plurality of first ratchets being transversely arranged and fixedly arranged in sequence on the lower side of the transverse plate, the inclined surface of the first ratchet being arranged facing right, the second ratchet being fixedly arranged in the middle of the upper side of the longitudinal plate and being meshed and clamped with the first ratchet, a vertically arranged strip opening being opened on the upper side of the right side wall of the bottom shell, a horizontally arranged connecting rod being slidably arranged in the strip opening, the left end of the connecting rod being fixedly connected to the transverse plate, the right end of the connecting rod extending to the outside of the bottom shell and fixedly connected to a push plate, vertically arranged elastic telescopic rods being fixedly arranged at the four corners of the upper end of the transverse plate, the upper end of each of the elastic telescopic rods being fixedly connected to the upper inner wall of the bottom shell.

[0009] Preferably, an anti-skid plate is fixedly provided on the bottom of the bottom cover.

[0010] Technical effects and advantages of the utility model:

[0011] 1. When in use, place the bottom cover on the conference table, directly pull the bottom shell and the projector body upwards, the bottom cover does not move, and the bottom shell and the projector body move upwards. By setting the first ratchet and the second ratchet, and by multiple elastic telescopic rods, when the bottom cover moves upwards, the longitudinal plate slides horizontally to the left on the lower side of the transverse plate, and the two long bars in each X-shaped hinged rod rotate relative to each other. When the projector body is adjusted to an appropriate height, stop pulling upwards, the projector body will apply pressure to the bottom cover, and the bottom cover applies downward pressure to the transverse plate through multiple elastic telescopic rods, so that the first ratchet on the lower side of the transverse plate The push plate is engaged with the second ratchet on the upper side of the longitudinal plate, so that the longitudinal plate cannot slide to the right and the X-shaped hinge rod cannot rotate. The two X-shaped hinge rods support the bottom shell and the projector body, thereby completing the adjustment of the height of the projector body so that the projector body can be accurately projected onto the screen. When the projector body needs to be adjusted downward, the push plate is pulled upward to separate the first ratchet on the lower side of the horizontal plate from the second ratchet, so that the bottom shell and the projector body can be pressed downward. Through the above device, it is easy to adjust the height of the projector body so that the projector body can be accurately projected onto the screen, which is convenient for people to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0013] Figure 1 It is a schematic diagram of the front cross-sectional structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the side sectional structure of the utility model.

[0015] In the figure: 1. projector body; 2. bottom shell; 3. bottom cover; 4. X-shaped hinged rod; 5. first fixed block; 6. second fixed block; 7. connecting block; 8. T-shaped slider; 9. longitudinal plate; 10. T-shaped slide rail; 11. guide round rod; 12. transverse plate; 13. first ratchet; 14. second ratchet; 15. connecting rod; 16. push plate; 17. anti-skid plate; 18. elastic telescopic rod. DETAILED DESCRIPTION

[0016] The utility model provides Figure 1-2A multimedia projection device with a self-lifting structure shown in the figure comprises a projector body 1, a bottom shell 2 and a bottom cover 3, wherein the bottom shell 2 is fixedly arranged at the lower side of the projector body 1, and the bottom cover 3 is horizontally arranged directly below the bottom shell 2, and two X-shaped hinged rods 4 symmetrically distributed front and back are arranged inside the bottom shell 2, and the X-shaped hinged rod 4 is composed of two long rods connected by a rotating shaft in the middle, and a first fixed block 5 and a second fixed block 6 are rotatably arranged at the left ends of each X-shaped hinged rod 4 through a first shaft pin and a second shaft pin, respectively, and the first fixed block 5 and the upper inner side of the bottom shell 2 are connected to each other. The left side of the wall is fixedly connected, the second fixed block 6 is fixedly connected to the left side of the upper surface of the bottom cover 3, the two ends of the right side of each X-shaped hinged rod 4 are rotatably connected with a connecting block 7 and a T-shaped slider 8 through a third axle pin and a fourth axle pin, and a longitudinal plate 9 is slidably arranged inside the bottom shell 2 through a guide mechanism. Both connecting blocks 7 are fixedly connected to the lower side of the longitudinal plate 9, and two transversely arranged T-shaped slide rails 10 are fixedly arranged on the upper surface of the bottom cover 3. The two T-shaped sliders 8 are slidably connected to the two T-shaped slide rails 10 respectively, and an active clamping mechanism for clamping the longitudinal plate 9 is arranged on the upper part of the inner part of the bottom shell 2.

[0017] like Figure 1 and Figure 2 As shown, the guide mechanism includes a group of guide round rods 11, and a group of horizontally arranged guide round holes are provided at the beginning of the side wall of the longitudinal plate 9. Two guide round rods 11 are respectively inserted into the two guide round holes for horizontal sliding. The left and right ends of each guide round rod 11 are respectively fixedly connected to the left and right sides of the bottom shell 2, which can guide the horizontal movement of the longitudinal plate 9 and make the longitudinal plate 9 more stable when moving horizontally.

[0018] like Figure 2 As shown, the number of the guide round rods 11 and the guide round holes are both set to two, and the two guide round rods 11 are symmetrically distributed front to back, thereby improving the stability of guiding the lateral movement of the longitudinal plate 9.

[0019] like Figure 1 and Figure 2 As shown, the movable clamping mechanism includes a transverse plate 12, a plurality of first ratchet teeth 13 and a second ratchet tooth 14. The transverse plate 12 is transversely arranged above the interior of the bottom shell 2 and above the longitudinal plate 9. The plurality of first ratchet teeth 13 are transversely arranged and fixedly arranged in sequence on the lower side of the transverse plate 12. The inclined surface of the first ratchet tooth 13 is arranged to face rightward. The second ratchet tooth 14 is fixedly arranged at the middle part of the upper side of the longitudinal plate 9 and can be engaged and clamped with the first ratchet tooth 13. A vertically arranged strip opening is opened on the upper side of the right side wall of the bottom shell 2. A horizontally arranged connecting rod 15 is slidably arranged in the strip opening. The left end of the connecting rod 15 is fixedly connected to the transverse plate 12, and the right end of the connecting rod 15 extends to the outside of the bottom shell 2 and is fixedly connected to a push plate 16. Vertically arranged elastic telescopic rods 18 are fixedly arranged at the four corners of the upper end of the transverse plate 12, and the upper end of each elastic telescopic rod 18 is fixedly connected to the upper inner wall of the bottom shell 2.

[0020] like Figure 1 and Figure 2 As shown, an anti-skid plate 17 is fixedly provided at the bottom of the bottom cover 3, so that it can be placed stably.

[0021] The working principle of the utility model is as follows: when in use, the bottom cover 3 is placed on the conference table, the bottom shell 2 and the projector body 1 are directly pulled upward, the bottom cover 3 does not move, the bottom shell 2 and the projector body 1 are moved upward, and the first ratchet 13 and the second ratchet 14 are set, and a plurality of elastic telescopic rods 18 are used to enable the bottom shell 2 to move upward, the longitudinal plate 9 slides horizontally to the left on the lower side of the transverse plate 12, and the two long bars in each X-shaped hinge rod 4 rotate relative to each other. When the projector body 1 is adjusted to an appropriate height, the upward pulling stops, the projector body 1 applies pressure to the bottom shell 2, and the bottom shell 2 applies downward pressure to the transverse plate 12 through the plurality of elastic telescopic rods 18, so that the lower side of the transverse plate 12 The first ratchet 13 is meshed and locked with the second ratchet 14 on the upper side of the longitudinal plate 9, so that the longitudinal plate 9 cannot slide to the right and the X-shaped hinge rod 4 cannot rotate. The two X-shaped hinge rods 4 support the bottom shell 2 and the projector body 1, thereby completing the adjustment of the height of the projector body 1 so that the projector body 1 can be accurately projected onto the screen. When the projector body 1 needs to be adjusted downward, the push plate 16 is pulled upward to separate the first ratchet 13 and the second ratchet 14 on the lower side of the transverse plate 12, so that the bottom shell 2 and the projector body 1 can be pressed downward. Through the upper device, it is easy to adjust the height of the projector body 1 so that the projector body 1 can be accurately projected onto the screen, which is convenient for people to use.

[0022] 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.

[0023] 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 multimedia projection device with a self-lifting structure, characterized in that: The projector comprises a projector body (1), a bottom shell (2) and a bottom cover (3), wherein the bottom shell (2) is fixedly arranged on the lower side of the projector body (1), and the bottom cover (3) is horizontally arranged directly below the bottom shell (2). Two X-shaped hinged rods (4) symmetrically distributed front and back are arranged inside the bottom shell (2), and the X-shaped hinged rods (4) are composed of two long rods whose middle parts are rotatably connected by a rotating shaft. The left ends of each X-shaped hinged rod (4) are rotatably arranged with a first fixed block (5) and a second fixed block (6) respectively through a first shaft pin and a second shaft pin, wherein the first fixed block (5) is fixedly connected to the left side of the upper inner wall of the bottom shell (2), and the second fixed block (6) is fixedly connected to the left side of the upper inner wall of the bottom shell (2). The second fixed block (6) is fixedly connected to the left side of the upper surface of the bottom cover (3); the two ends of the right side of each X-shaped hinged rod (4) are rotatably connected to a connecting block (7) and a T-shaped slider (8) through a third shaft pin and a fourth shaft pin, respectively; a longitudinal plate (9) is slidably arranged inside the bottom shell (2) through a guide mechanism; the two connecting blocks (7) are fixedly connected to the lower side of the longitudinal plate (9); two transversely arranged T-shaped slide rails (10) are fixedly arranged on the upper surface of the bottom cover (3); the two T-shaped sliders (8) are slidably connected to the two T-shaped slide rails (10) respectively; and a movable clamping mechanism for clamping the longitudinal plate (9) is arranged on the upper part of the inside of the bottom shell (2).

2. The multimedia projection device with a self-lifting structure according to claim 1, characterized in that: The guide mechanism comprises a group of guide round rods (11), a group of transversely arranged guide round holes are formed at the beginning of the side wall of the longitudinal plate (9), two guide round rods (11) are respectively inserted into the two guide round holes in a transversely sliding manner, and the left and right ends of each guide round rod (11) are respectively fixedly connected to the left and right sides of the bottom shell (2).

3. The multimedia projection device with a self-lifting structure according to claim 2, characterized in that: The number of the guide round rods (11) and the number of the guide round holes are both set to two, and the two guide round rods (11) are symmetrically distributed front to back.

4. The multimedia projection device with a self-lifting structure according to claim 3, characterized in that: The movable clamping mechanism comprises a transverse plate (12), a plurality of first ratchet teeth (13) and a second ratchet tooth (14); the transverse plate (12) is arranged transversely above the interior of the bottom shell (2) and above the longitudinal plate (9); the plurality of first ratchet teeth (13) are arranged transversely and fixedly arranged in sequence on the lower side of the transverse plate (12); the inclined surface of the first ratchet teeth (13) is arranged to face rightward; the second ratchet teeth (14) are fixedly arranged at the middle of the upper side of the longitudinal plate (9) and can be engaged with the first ratchet teeth (13); the bottom shell ( A vertically arranged strip opening is provided on the upper side of the right side wall of the bottom shell (2), a horizontally arranged connecting rod (15) is slidably arranged in the strip opening, the left end of the connecting rod (15) is fixedly connected to the horizontal plate (12), the right end of the connecting rod (15) extends to the outside of the bottom shell (2) and is fixedly connected to a push plate (16), and vertically arranged elastic telescopic rods (18) are fixedly arranged at the four corners of the upper end of the horizontal plate (12), and the upper end of each of the elastic telescopic rods (18) is fixedly connected to the upper inner wall of the bottom shell (2).

5. The multimedia projection device with a self-lifting structure according to claim 4, characterized in that: An anti-skid plate (17) is fixedly provided at the bottom of the bottom cover (3).

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