Telescopic light screen for easy viewing angle adjustment

Abstract

The utility model relates to the technical field of telephoto light screens, in particular to a telephoto light screen that is easy to adjust the viewing angle, comprising: a mounting base and a telephoto light screen body, a moving part is arranged in an inner groove of the mounting base, a plurality of groups of supporting parts are arranged on the moving part, a transmission part is arranged in the inner holes of the plurality of groups of supporting parts, a worm gear is coaxially arranged on the transmission part, a transmission shaft is arranged at the shaft hole of the moving part, a worm is coaxially arranged on the transmission shaft, the worm and the worm are meshingly connected, the telephoto light screen body is arranged on the transmission part through a supporting component; a driving component is arranged on the mounting base, and the driving component is used to provide rotational power for the transmission shaft; and the viewing angle can be conveniently adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of telescopic light screens, in particular to a telescopic light screen which is convenient for adjusting the viewing angle. Background Art

[0002] As the name implies, a telescopic light screen is a screen device designed to display distant images. It usually plays a key role in projection systems. In the current field of audio-visual equipment, telescopic light screens are an important display terminal and are widely used in education, conferences, home theaters, public places, and information display. However, most existing telescopic light screens are not flexible enough in adjusting the viewing angle, and often require manual adjustment. The adjustment process is cumbersome and it is difficult to achieve precise angle control. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a telescopic light screen which is convenient for adjusting the viewing angle and easy for adjusting the viewing angle.

[0004] The utility model provides a telescopic light screen that is convenient for adjusting the viewing angle, comprising:

[0005] The mounting base and the telephoto light screen body are provided with a moving part in the inner groove of the mounting base, a plurality of supporting parts are provided on the moving part, a transmission part is provided in the inner holes of the plurality of supporting parts, a worm gear is coaxially provided on the transmission part, a transmission shaft is provided at the shaft hole of the moving part, a worm is coaxially provided on the transmission shaft, the worm and the worm gear are meshingly connected, and the telephoto light screen body is provided on the transmission part through a supporting assembly;

[0006] The driving assembly is arranged on the mounting base and is used for the transmission shaft to provide rotational power.

[0007] Furthermore, the support assembly includes fixing parts symmetrically arranged at both ends of the transmission part, a limiting part is arranged in the positioning groove of the fixing part, multiple groups of limiting parts are arranged on the telephoto light screen body, and screws are arranged in the threaded holes of the fixing parts, and the screws are in contact and connected with the limiting parts.

[0008] Preferably, the drive assembly includes a power shaft arranged in the mounting hole of the mounting base, a driving bevel gear is coaxially arranged on the power shaft, a driven bevel gear is coaxially arranged on the transmission shaft, and the driven bevel gear is meshingly transmission-connected with the driving bevel gear.

[0009] Furthermore, a storage part is provided on the mounting base, a piston part is provided inside the storage part, a damping part is provided at one end of the piston part, the damping part is provided on the moving part, a spring is provided at the other end of the piston part, and the other end of the spring is provided on the adjusting component.

[0010] Preferably, the adjustment assembly includes an adjustment member arranged inside the storage member, a spring is arranged on the adjustment member, a bolt is arranged in the threaded hole of the storage member, and the bolt is arranged on the adjustment member.

[0011] Furthermore, the interior of the mounting base is arranged inside the isolation piece, and the driving assembly and the storage piece are both arranged inside the isolation piece.

[0012] Preferably, the transmission shaft is coaxially arranged with the rotation axis of the moving part.

[0013] Furthermore, a plurality of groups of mounting holes are arranged on the mounting base.

[0014] Preferably, a protective member is provided on the mounting base, and the worm wheel and the worm are both located inside the cavity of the protective member.

[0015] Furthermore, an adjustment hole is provided on the mounting base.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows: through multiple groups of supporting parts, the transmission parts are rotatably supported on the moving parts, and the visible direction of the telephoto light screen body is easy to adjust through the rotation connection between the moving parts and the mounting base. Through the design of the worm gear mechanism, the accurate and smooth adjustment of the angle of the telephoto light screen body is achieved. The user can easily adjust the viewing angle of the light screen according to actual needs, which greatly improves the flexibility and comfort during use. At the same time, the transmission combination of the worm gear and worm gear also has a one-way self-locking function, which makes the telephoto light screen body self-locking after the angle is adjusted. The structural design of multiple groups of supporting parts and transmission parts not only ensures the stable support of the light screen during the adjustment process, but also enhances the stability of the overall structure, effectively avoids displacement or shaking caused by external force, and extends the service life of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view structural schematic diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the axonometric structure of the utility model;

[0019] Figure 3 It is a schematic diagram of the internal structure of the utility model;

[0020] Figure 4 It is a cross-sectional structural schematic diagram of the utility model;

[0021] Markings in the attached drawings: 1. mounting base; 2. moving part; 3. supporting part; 4. transmission part; 5. worm gear; 6. transmission shaft; 7. worm; 8. telescopic light screen body; 9. fixing part; 10. limiting part; 11. screw; 12. power shaft; 13. driving bevel gear; 14. driven bevel gear; 15. storage part; 16. piston part; 17. damping part; 18. spring; 19. adjusting part; 20. bolt; 21. isolation part; 22. mounting hole; 23. protective part; 24. adjusting hole. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] like Figures 1 to 4 As shown, the telescopic light screen of the utility model, which is convenient for adjusting the viewing angle, comprises:

[0024] A mounting base 1 and a telephoto light screen body 8 are provided, wherein a moving member 2 is rotatably arranged in an inner groove of the mounting base 1, a plurality of groups of supporting members 3 are provided on the moving member 2, a transmission member 4 is provided in the inner holes of the plurality of groups of supporting members 3, a worm gear 5 is coaxially arranged on the transmission member 4, a transmission shaft 6 is rotatably arranged at the shaft hole of the moving member 2, a worm 7 is coaxially arranged on the transmission shaft 6, the worm 7 is meshingly connected with the worm gear 5, and the telephoto light screen body 8 is arranged on the transmission member 4 through a supporting assembly;

[0025] The driving assembly is arranged on the mounting base 1, and the driving assembly is used for the transmission shaft 6 to provide rotational power; the transmission member 4 is rotationally supported on the moving member 2 through multiple sets of support members 3, and the visible direction of the telephoto light screen body 8 is easy to adjust through the rotation connection between the moving member 2 and the mounting base 1. The design of the worm gear 5 and worm 7 mechanism realizes the accurate and smooth adjustment of the angle of the telephoto light screen body 8. The user can easily adjust the viewing angle of the light screen according to actual needs, which greatly improves the flexibility and comfort during use. At the same time, the transmission combination of the worm gear 5 and the worm 7 also has a one-way self-locking function, so that the telephoto light screen body 8 is self-locking after the angle is adjusted. The structural design of the multiple sets of support members 3 and the transmission member 4 not only ensures the stable support of the light screen during the adjustment process, but also enhances the stability of the overall structure, effectively avoids displacement or shaking caused by external force, and extends the service life of the product.

[0026] like Figures 1 to 4As shown, as a preferred solution, the support assembly includes fixing members 9 symmetrically arranged at both ends of the transmission member 4, and limiting members 10 are slidably arranged in the positioning grooves of the fixing members 9. Multiple groups of limiting members 10 are arranged on the telephoto light screen body 8, and screws 11 are arranged in the threaded holes of the fixing members 9, and the screws 11 are in contact and connected with the limiting members 10; the support assembly realizes the precise positioning of the telephoto light screen body 8 by symmetrically arranging the fixing members 9 at both ends of the transmission member 4 and arranging the limiting members 10 in the positioning grooves of the fixing members 9. This design not only ensures that the telephoto light screen body 8 is stably supported on the transmission member 4, but also the supporting height of the telephoto light screen body 8 can be adjusted, and the adjustment trajectory can be limited. The connection position of the limiting member 10 and the fixing member 9 is limited by the screws 11, thereby improving the convenience of height adjustment of the telephoto light screen body 8.

[0027] like Figures 1 to 4 As shown, as a preferred solution, the driving assembly includes a power shaft 12 arranged in the mounting hole of the mounting base 1, a driving bevel gear 13 is coaxially arranged on the power shaft 12, a driven bevel gear 14 is coaxially arranged on the transmission shaft 6, the driven bevel gear 14 is meshed and transmission-connected with the driving bevel gear 13, and a multi-faceted adjustment groove is arranged on the power shaft 12; by adopting the coaxial arrangement of the power shaft 12 and the driving bevel gear 13, and the driven bevel gear 14 configured on the transmission shaft 6 is meshed with it, the high efficiency and stability of power transmission are ensured, and this bevel gear transmission mode can withstand a large torque, and even when a large angle adjustment is required or a heavy telephoto light screen body 8 is carried, a smooth and powerful power output can be guaranteed, so that the adjustment process is smooth and unobstructed, and at the same time, the viewing angle of the telephoto light screen body 8 can be adjusted by the rotation of the power shaft 12 and the transmission shaft 6.

[0028] like Figures 1 to 4As shown, as a preferred solution, a receiving member 15 is provided on the mounting base 1, a piston member 16 is provided inside the receiving member 15, a damping member 17 is provided at one end of the piston member 16, the damping member 17 is provided on the moving member 2, a spring 18 is provided at the other end of the piston member 16, and the other end of the spring 18 is provided on the adjusting component; the adjusting component includes an adjusting member 19 provided inside the receiving member 15, the spring 18 is provided on the adjusting member 19, a bolt 20 is provided in the threaded hole of the receiving member 15, the bolt 20 is provided on the adjusting member 19, and an adjusting hole 24 is provided on the mounting base 1, and the adjusting hole 24 is provided coaxially with the bolt 20; by providing the receiving member 15 and the internal The piston 16, the damping member 17, the spring 18 and other components constitute a precise damping system. When the user adjusts the direction of the telephoto light screen body 8, the damping member 17 can effectively increase the resistance to the mutual rotation of the moving member 2 and the mounting base 1, and prevent the telephoto light screen body 8 from freely rotating in the visible direction under non-subjective adjustment, thereby ensuring that the adjustment process is smoother and quieter, and improving the user's operating experience. The addition of the spring 18 provides a dynamic support force for the moving member 2. The combined design of the adjustment member 19 and the bolt 20 in the adjustment assembly enables the spring 18 to adjust the driving strength of the damping member 17. The coaxial arrangement of the bolt 20 and the adjustment hole 24 makes the adjustment of the spring 18 more convenient.

[0029] like Figures 1 to 4 As shown, as a preferred solution, an isolation member 21 is disposed inside the mounting base 1, and the drive assembly and the storage member 15 are both disposed inside the isolation member 21; the setting of the isolation member 21 effectively divides the internal space of the mounting base 1, so that the two key subsystems of the drive assembly and the storage member 15 can be integrated in an orderly manner, thereby reducing the impact of external vibration and impact on sensitive components.

[0030] like Figures 1 to 4 As shown, as a preferred solution, the transmission shaft 6 is coaxially arranged with the rotation axis of the movable part 2; the coaxial arrangement ensures the directness and consistency of the transmission between the transmission shaft 6 and the movable part 2, reduces the additional friction and energy loss that may be caused by the eccentric arrangement, thereby improving the efficiency and response speed of the entire transmission system.

[0031] like Figures 1 to 4 As shown, as a preferred solution, a plurality of groups of mounting holes 22 are provided on the mounting base 1; the mounting base is conveniently fixed by the plurality of groups of mounting holes 22.

[0032] like Figures 1 to 4 As shown, as a preferred solution, a protective member 23 is provided on the mounting base 1, and the worm wheel 5 and the worm 7 are both located inside the cavity of the protective member 23; the protective member 23 can effectively shield the transmission components such as the worm wheel 5 and the worm 7, thereby preventing the user from directly contacting these moving parts during operation or cleaning, reducing the risk of accidental injury, and improving the safety of product use.

[0033] like Figures 1 to 4 As shown, as a preferred solution, its working process is as follows:

[0034] When the viewing angle of the telephoto light screen body 8 needs to be adjusted, the active bevel gear 13 is driven to rotate through the power shaft 12. Since the active bevel gear 13 is meshed with the driven bevel gear 14 on the transmission shaft 6, the worm 7 is driven to rotate. As the worm 7 rotates, the mechanism meshing with the worm wheel 5 starts to work. The worm wheel 5 is fixed on the transmission member 4. Therefore, the rotation of the worm wheel 5 drives the transmission member 4 to rotate, which is converted into precise adjustment of the viewing angle of the telephoto light screen body 8. When the telephoto light screen body 8 is adjusted in height, the fixing member 9 and the limit member 10 in the support assembly slide relative to each other, and then the screw 11 is used to lock it. When the visible direction of the telephoto light screen body 8 is adjusted, the moving member 2 is driven to rotate relative to the mounting base 1.

[0035] The installation, connection or setting methods of the telescopic light screen of the utility model, which is convenient for adjusting the viewing angle, are all common mechanical methods, and any method that can achieve its beneficial effects can be implemented.

[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A telescopic light screen that is convenient for adjusting the viewing angle, characterized in that: include: A mounting base and a telephoto light screen body, wherein a moving part is arranged in an inner groove of the mounting base, a plurality of groups of supporting parts are arranged on the moving part, a transmission part is arranged in the inner holes of the plurality of groups of supporting parts, a worm gear is coaxially arranged on the transmission part, a transmission shaft is arranged at the shaft hole of the moving part, a worm is coaxially arranged on the transmission shaft, the worm is meshingly connected with the worm gear, and the telephoto light screen body is arranged on the transmission part through a supporting assembly; A driving assembly is arranged on the mounting base and is used for the transmission shaft to provide rotational power.

2. The telescopic light screen for facilitating adjustment of viewing angle according to claim 1, characterized in that: The support assembly includes fixing parts symmetrically arranged at both ends of the transmission part, and a limiting part is arranged in the positioning groove of the fixing part. Multiple groups of the limiting parts are arranged on the telephoto light screen body. Screws are arranged in the threaded holes of the fixing parts, and the screws are in contact with the limiting parts.

3. The telescopic light screen for facilitating adjustment of viewing angle according to claim 1, characterized in that: The driving assembly comprises a power shaft arranged in a mounting hole of a mounting base, a driving bevel gear is coaxially arranged on the power shaft, a driven bevel gear is coaxially arranged on the transmission shaft, and the driven bevel gear is meshed and transmission-connected with the driving bevel gear.

4. The telescopic light screen for facilitating adjustment of viewing angle according to claim 1, characterized in that: A receiving part is arranged on the mounting base, a piston part is arranged inside the receiving part, a damping part is arranged at one end of the piston part, the damping part is arranged on the moving part, a spring is arranged at the other end of the piston part, and the other end of the spring is arranged on the adjusting component.

5. The telescopic light screen for facilitating adjustment of viewing angle as claimed in claim 4, characterized in that: The adjusting component comprises an adjusting member arranged inside the receiving member, the spring is arranged on the adjusting member, a bolt is arranged in a threaded hole of the receiving member, and the bolt is arranged on the adjusting member.

6. The telescopic light screen for facilitating adjustment of viewing angle as claimed in claim 4, characterized in that: The interior of the mounting base is arranged in an isolating member, and the driving assembly and the receiving member are both arranged in the interior of the isolating member.

7. The telescopic light screen for facilitating adjustment of viewing angle according to claim 1, characterized in that: The transmission shaft is coaxially arranged with the rotation axis of the moving part.

8. The telescopic light screen for facilitating adjustment of viewing angle according to claim 1, characterized in that: The mounting base is provided with a plurality of mounting holes.

9. The telescopic light screen for facilitating adjustment of viewing angle according to claim 1, characterized in that: A protective member is arranged on the mounting base, and the worm wheel and the worm are both located inside the cavity of the protective member.

10. The telescopic light screen for facilitating adjustment of viewing angle according to claim 1, characterized in that: The mounting base is provided with an adjustment hole.

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