A projection device with adjustable use height

Abstract

The utility model discloses a projection device of adjustable use height, including fixed plate and projector, the projector top surface is equipped with the connecting frame, be provided with adjusting mechanism between the connecting frame and fixed plate, the adjusting mechanism includes adjusting sleeve and adjusting lever, adjusting sleeve is fixed at the fixed plate bottom, and adjusting lever slides in adjusting sleeve and is connected with the connecting frame in the bottom end, and adjusting hole is seted up to adjusting lever outer wall, adjusting hole is provided with multiple groups, and the jack is seted up on adjusting sleeve, be provided with fixed mechanism in the jack, the fixed mechanism includes the plug -in rod and fixed sleeve, and the device through adopting the sliding connection of adjusting lever and adjusting sleeve makes the height adjustment of projector become more simple and efficient, and the user only needs to slide adjusting lever along adjusting sleeve, can easily realize the accurate adjustment of projector use height, and this kind of structure design not only simplifies the operation process, but also avoids the trouble of needing to use tools of traditional fixed mode.

Description

Technical Field

[0001] This utility model relates to the field of projection device technology, and more specifically, to a projection device with adjustable usage height. Background Technology

[0002] In many application scenarios, such as conference rooms, classrooms, and exhibitions, the height adjustment of projection devices is essential. To adapt to different projection needs, the height of the projector needs to be flexibly adjustable. However, in the existing technology, the height adjustment of most projection devices relies on bolts or plugs for fixing. Bolt fixing usually requires the use of special tools, which requires users to spend extra time and effort. Moreover, it is not convenient to quickly adjust the height in emergency situations. Especially in scenarios where frequent device adjustments are required, the complexity and inconvenience of operation become obvious shortcomings.

[0003] Furthermore, although bolts can easily fix the height, their stability is far inferior to that of bolts. This method may be affected by external vibrations, impacts, and other factors, causing the projector's height to shift unexpectedly during use, thus affecting the projection effect and the safety of the device. Therefore, bolt fixing not only has problems with stability but also cannot provide sufficient support. Especially in environments that require precise positioning and long-term stable use, the projector's fixing performance is particularly important. Utility Model Content

[0004] In view of the problems existing in the prior art, the present invention provides a projection device with adjustable usage height to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an adjustable projection device, comprising a fixed plate and a projector, wherein a connecting frame is mounted on the top surface of the projector, and an adjustment mechanism is provided between the connecting frame and the fixed plate, the adjustment mechanism comprising an adjustment sleeve and an adjustment rod, the adjustment sleeve being fixed to the bottom surface of the fixed plate, the adjustment rod sliding within the adjustment sleeve and having its bottom end connected to the connecting frame, the outer wall of the adjustment rod having an adjustment hole, wherein multiple sets of adjustment holes are provided, the adjustment sleeve having an insertion hole, and a fixing mechanism being provided within the insertion hole, the fixing mechanism comprising an insertion rod and a fixing sleeve, the insertion rod being inserted into the insertion hole and the adjustment hole, the fixing sleeve being inserted into the top end of the insertion rod, the outer wall of the insertion rod having a movable groove, wherein multiple sets of movable grooves are distributed on the outer wall of the insertion rod, a stop plate being fixedly provided at the bottom end of the insertion rod, and a locking block being slidably provided within each set of movable grooves, and a retaining ring being fixedly provided within the fixing sleeve.

[0006] The present invention is further configured such that both the adjusting sleeve and the adjusting rod are polygonal and slidably connected. The polygonal design prevents the two parts from rotating relative to each other during the adjustment process, ensuring precise and controllable adjustment. At the same time, the sliding connection facilitates height adjustment and improves the flexibility of use.

[0007] The present invention is further provided that the top of each of the multiple sets of card blocks is provided with a bevel. The bevel design allows the card block to be smoothly compressed during insertion, reducing insertion resistance and realizing automatic guiding function, while ensuring a smooth transition during unlocking and improving the convenience of operation.

[0008] The present invention is further provided that the outer side of the socket is provided with a rounded corner. The rounded corner structure reduces the frictional resistance between the insertion part and the edge of the socket, guides the part to smoothly enter the socket, avoids jamming, extends the service life of the equipment, and improves the installation efficiency.

[0009] The present invention is further configured such that a groove is provided on the outer wall of the fixed sleeve, a sliding sleeve is slidably disposed in the groove, and an unlocking sleeve is fixedly disposed on the inner side of the sliding sleeve. This combination constitutes an axial sliding unlocking mechanism, ensuring that the unlocking action is performed along a predetermined path, improving the reliability and stability of the unlocking operation, and simplifying the unlocking steps.

[0010] The present invention is further configured such that each of the multiple sets of locking blocks and the movable groove is connected with a push spring. The push spring provides a continuous and stable elastic force, so that the locking block remains in the locked position in the natural state. When force is applied, it can be temporarily compressed to unlock. After the force is released, it can automatically return to the locked state, ensuring that the connection is firm and reliable.

[0011] The present invention is further configured such that a limiting mechanism is provided on the outer side of the fixed sleeve. The limiting mechanism includes a connecting sleeve and a rotating sleeve. The connecting sleeve is fixed to the bottom surface of the sliding sleeve, and the rotating sleeve rotates on the outer wall of the fixed sleeve. An installation block is fixed on the outer wall of the connecting sleeve. The installation block is provided with multiple sets, and each set has a limiting rod fixed on its outer wall. A longitudinal rod is fixed on the outer wall of the rotating sleeve. The longitudinal rod is provided with multiple sets, and each set has a limiting hole on its outer wall. The multiple sets of limiting rods are inserted into the limiting holes. This composite structure converts rotational motion into axial movement, realizing the mechanical transmission of the unlocking operation, preventing accidental unlocking, improving system safety, and at the same time, the operation is simple and intuitive, reducing the threshold for use.

[0012] The present invention is further provided that the top of the limit rods and the outer side of the limit holes are all provided with rounded corners. The rounded corner design reduces the friction during the insertion and removal of the limit rods, avoids the phenomenon of rotation jamming, improves the smoothness of operation, and at the same time reduces the wear of components and extends the service life of the entire mechanism.

[0013] Compared with the prior art, the present invention provides a projection device with an adjustable operating height, which has the following advantages:

[0014] 1. This device uses a sliding connection between an adjusting rod and an adjusting sleeve, making projector height adjustment simpler and more efficient. Users can easily and precisely adjust the projector height by simply sliding the adjusting rod along the adjusting sleeve. This structural design not only simplifies the operation process but also avoids the inconvenience of using tools in traditional fixed methods, making projector height adjustment faster and more convenient, and meeting the flexible needs for projector height in different environments.

[0015] 2. This device adopts a fixing method using a plug and a fixing sleeve, combined with multiple fixing mechanisms such as a locking block, a push spring, and a retaining ring, which effectively ensures the stability of the projector. Through the cooperation of the inclined locking block and the movable groove, the push spring can be automatically squeezed during the height adjustment process, thereby ensuring that the projector can be firmly fixed after adjustment, avoiding the problem of unstable projector position due to vibration or external impact. In addition, the connection method between the fixing sleeve and the plug ensures the stability of the projector and avoids the drawbacks of the instability of the traditional plug method.

[0016] 3. This device is also designed with a convenient unlocking mechanism, which can easily release the fixing of the adjustment rod. When the projector height needs to be adjusted, rotating the rotating sleeve can quickly release the engagement between the limiting rod and the limiting hole. The unlocking sleeve drives the locking block to move, quickly releasing the fixing. This ensures that users can adjust the height without effort. This design makes the use of the projector more flexible, can adapt to frequently changing needs, and improves the convenience and comfort of operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a projection device with adjustable usage height according to the present invention;

[0018] Figure 2 This is a schematic diagram of the disassembly structure of the insertion rod and the fixing sleeve in this utility model;

[0019] Figure 3 This is a cross-sectional view of the fixing mechanism in this utility model;

[0020] Figure 4 This is a cross-sectional view of the fixing sleeve in this utility model;

[0021] Figure 5 This is a cross-sectional view of the insertion rod in this utility model.

[0022] In the diagram: 1. Fixed plate; 2. Projector; 3. Connecting frame; 4. Adjusting sleeve; 5. Adjusting rod; 6. Adjusting hole; 7. Insert rod; 8. Fixed sleeve; 9. Movable groove; 10. Support plate; 11. Locking block; 12. Snap ring; 13. Sliding groove; 14. Sliding sleeve; 15. Unlocking sleeve; 16. Push spring; 17. Connecting sleeve; 18. Rotating sleeve; 19. Mounting block; 20. Limiting rod; 21. Vertical rod; 22. Limiting hole; 30. Insertion hole. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0025] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0026] Please see Figures 1-5 An adjustable projection device includes a fixed plate 1 and a projector 2. A connecting frame 3 is installed on the top surface of the projector. An adjustment mechanism is provided between the connecting frame 3 and the fixed plate 1. The adjustment mechanism includes an adjustment sleeve 4 and an adjustment rod 5. The adjustment sleeve 4 is fixed to the bottom surface of the fixed plate 1. The adjustment rod 5 slides in the adjustment sleeve 4 and its bottom end is connected to the connecting frame 3. An adjustment hole 6 is provided on the outer wall of the adjustment rod 5. Multiple sets of adjustment holes 6 are provided. An insertion hole 30 is provided on the adjustment sleeve 4. A fixing mechanism is provided in the insertion hole 30. The fixing mechanism includes an insertion rod 7 and a fixing sleeve 8. The insertion rod 7 is inserted into the insertion hole 30 and the adjustment hole 6. The fixing sleeve 8 is inserted into the top end of the insertion rod 7. A movable groove 9 is provided on the outer wall of the insertion rod 7. Multiple sets of movable grooves 9 are distributed on the outer wall of the insertion rod 7. A stop plate 10 is fixed at the bottom end of the insertion rod 7. A locking block 11 is slidably provided in each of the multiple sets of movable grooves 9. A retaining ring 12 is fixed in the fixing sleeve 8.

[0027] Both the adjusting sleeve 4 and the adjusting rod 5 are polygonal and slidably connected. The polygonal design creates an anti-rotation sliding mechanism between the two parts, ensuring that they can only move axially during adjustment and will not rotate relative to each other, thus guaranteeing adjustment accuracy and stability.

[0028] The top of each of the multiple sets of card blocks 11 is provided with a bevel. The bevel design allows the card block 11 to be gradually compressed into the movable slot 9 during the insertion process, reducing the insertion resistance and achieving a smooth insertion process and automatic locking function.

[0029] The outer side of the socket 30 is provided with rounded corners. The rounded corner structure facilitates the smooth insertion of the insertion component into the socket 30, reduces insertion resistance, avoids jamming caused by sharp edges, and improves installation efficiency and ease of use.

[0030] The outer wall of the fixed sleeve 8 is provided with a sliding groove 13, and a sliding sleeve 14 is slidably disposed in the sliding groove 13. An unlocking sleeve 15 is fixedly disposed on the inner side of the sliding sleeve 14. This structure forms an axial sliding unlocking mechanism. By moving the sliding sleeve 14 in the sliding groove 13, the unlocking sleeve 15 is driven to unlock the internal block, thereby realizing a controllable unlocking process.

[0031] Each set of locking blocks 11 is connected to a push spring 16, which provides a continuous external pushing force to the locking blocks 11. When there is no external force, the locking blocks 11 naturally pop out of the movable slot 9 to form a locked state. When pressure is applied, they can be temporarily compressed back into the movable slot 9 to achieve the unlocking function.

[0032] A limiting mechanism is provided on the outer side of the fixed sleeve 8. The limiting mechanism includes a connecting sleeve 17 and a rotating sleeve 18. The connecting sleeve 17 is fixed to the bottom surface of the sliding sleeve 14, and the rotating sleeve 18 rotates on the outer wall of the fixed sleeve 8. An installation block 19 is fixedly provided on the outer wall of the connecting sleeve 17. The installation block 19 is provided with multiple sets, and each of the installation blocks 19 is fixedly provided with a limiting rod 20 on its outer wall. A longitudinal rod 21 is fixedly provided on the outer wall of the rotating sleeve 18. The longitudinal rod 21 is provided with multiple sets, and each of the longitudinal rods 21 is provided with a limiting hole 22 on its outer wall. The multiple sets of limiting rods 20 are inserted into the limiting holes 22. This mechanism constitutes a rotary-driven unlocking system. By rotating the rotating sleeve 18, the longitudinal rod 21 is driven, causing the relative position of the limiting hole 22 and the limiting rod 20 to change, thereby driving the connecting sleeve 17 to drive the sliding sleeve 14 and the unlocking sleeve 15 to perform the unlocking operation.

[0033] The top of the multiple sets of limiting rods 20 and the outer side of the limiting hole 22 are all provided with rounded corners. The rounded corner design allows the limiting rods 20 to smoothly insert into or disengage from the limiting hole 22, reducing resistance and wear during rotation, improving the smoothness of operation, and extending the service life of the mechanism.

[0034] In this embodiment, during use, the height of the projector 2 is adjusted by sliding the adjusting rod 5 along the adjusting sleeve 4. After adjusting to a suitable height, the adjusting hole 6 is aligned with the insertion hole 30, and the insertion rod 7 is inserted into the insertion hole 30 and the adjusting hole 6. The rounded corners on the outside of the insertion hole 30 abut against the inclined surface on the top of the multiple sets of locking blocks 11, so that the multiple sets of locking blocks 11 slide along the movable groove 9 and squeeze the multiple sets of push springs 16. Then, the fixing sleeve 8 is inserted into the top of the insertion rod 7, and the multiple sets of locking blocks 11 are pushed into the movable groove 9 by the inner wall of the retaining ring 12 to squeeze the push springs 16. When the multiple sets of locking blocks 11 are fully inserted into the fixing sleeve 8, the multiple sets of push springs 16 reset and push the locking blocks 11 out of the movable groove 9. At this time, the bottom surface of the multiple sets of locking blocks 11 abuts against the top surface of the retaining ring 12, and the fixing sleeve 8 and the abutment plate 10 abut against the outer wall of the adjusting sleeve 4. The adjusting rod 5 is fixed by the insertion rod 7.

[0035] More specifically, when it is necessary to unlock the adjusting rod 5, rotating the rotating sleeve 18 drives multiple sets of vertical rods 21 to rotate. The rotation of multiple sets of vertical rods 21 causes multiple sets of limiting holes 22 to separate from the limiting rods 20, releasing the limiting of the sliding sleeve 14. The sliding sleeve 14 is pushed to slide along the sliding groove 13 and drive the unlocking sleeve 15 to slide, so that the unlocking sleeve 15 pushes multiple sets of locking blocks 11 to slide into the movable groove 9, so that the bottom surface of multiple sets of locking blocks 11 disengages from the abutment of the locking ring 12. Then the insertion rod 7 can be pulled out of the fixing sleeve 8 and the insertion hole 30 to unlock the adjusting rod 5, and then the height can be adjusted again.

[0036] In summary, during use or operation of the overall equipment: When in use, the height of the projector 2 is adjusted by sliding the adjusting rod 5 along the adjusting sleeve 4. After adjusting to the appropriate height, the adjusting hole 6 is aligned with the insertion hole 30. The insertion rod 7 is then inserted into the insertion hole 30 and the adjusting hole 6. The rounded corners on the outside of the insertion hole 30 abut against the inclined surface at the top of the multiple sets of locking blocks 11, causing the multiple sets of locking blocks 11 to slide along the movable groove 9 and press against the multiple sets of push springs 16. Then, the fixing sleeve 8 is inserted into the top of the insertion rod 7. The inner wall of the retaining ring 12 pushes the multiple sets of locking blocks 11 to slide into the movable groove 9 and press against the push springs 16. When the multiple sets of locking blocks 11 are fully inserted into the fixing sleeve 8, the multiple sets of push springs 16 reset and push the locking blocks 11 out of the movable groove 9. At this time, the bottom surface of the multiple sets of locking blocks 11 abuts against the top surface of the retaining ring 12, and the fixing sleeve 8 abuts against the outer wall of the adjusting sleeve 4 with the abutment plate 10. The insertion rod 7 fixes the adjusting rod 5.

[0037] When it is necessary to unlock the adjusting rod 5, rotating the rotating sleeve 18 drives multiple sets of vertical rods 21 to rotate. The rotation of multiple sets of vertical rods 21 causes multiple sets of limiting holes 22 to separate from the limiting rods 20, releasing the limiting of the sliding sleeve 14. The sliding sleeve 14 is pushed to slide along the sliding groove 13 and drive the unlocking sleeve 15 to slide, so that the unlocking sleeve 15 pushes multiple sets of locking blocks 11 to slide into the movable groove 9, so that the bottom surface of multiple sets of locking blocks 11 disengages from the abutment of the locking ring 12. Then the insertion rod 7 can be pulled out of the fixing sleeve 8 and the insertion hole 30 to unlock the adjusting rod 5, and then the height can be adjusted again.

[0038] Of all the solutions mentioned above, those involving connections between two components can be selected based on the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other well-known connection methods. These will not be elaborated on here. For all the fixed connections mentioned above, welding is the preferred option.

[0039] In all the solutions mentioned above, those involving the operation of electrical components, unless otherwise specified, are controlled by a controller. Since the devices matched with the controllers are common devices, their control principles and circuit connections are existing, well-known, and mature technologies, and their specific circuit structures will not be described in detail here.

[0040] Of all the solutions mentioned above, those involving motors can be combined with reducers if necessary. The connection structure and working principle between the motor and the reducer are existing known technologies and will not be addressed in this utility model.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A projection device with adjustable operating height, comprising a mounting plate (1) and a projector (2), characterized in that: the projector A connecting frame (3) is installed on the top surface. An adjustment mechanism is provided between the connecting frame (3) and the fixed plate (1). The adjustment mechanism includes an adjustment sleeve (4) and an adjustment rod (5). The adjustment sleeve (4) is fixed to the bottom surface of the fixed plate (1). The adjustment rod (5) slides inside the adjustment sleeve (4) and its bottom end is connected to the connecting frame (3). An adjustment hole (6) is provided on the outer wall of the adjustment rod (5). Multiple sets of adjustment holes (6) are provided. An insertion hole (30) is provided on the adjustment sleeve (4). An insertion hole (30) is provided inside the insertion hole (30). There is a fixing mechanism, which includes a plug rod (7) and a fixing sleeve (8). The plug rod (7) is inserted into the plug hole (30) and the adjustment hole (6). The fixing sleeve (8) is inserted into the top of the plug rod (7). The outer wall of the plug rod (7) is provided with a movable groove (9). Multiple sets of movable grooves (9) are provided on the outer wall of the plug rod (7). The bottom end of the plug rod (7) is fixedly provided with a stop plate (10). Each set of movable grooves (9) is provided with a sliding block (11). The fixing sleeve (8) is fixedly provided with a retaining ring (12).

2. The projection device with adjustable operating height according to claim 1, characterized in that: The adjusting sleeve (4) and the adjusting rod (5) are both polygonal and slidably connected.

3. The projection device with adjustable operating height according to claim 2, characterized in that: The top of each of the multiple sets of card blocks (11) is provided with a slope.

4. The projection device with adjustable operating height according to claim 3, characterized in that: The outer side of the socket (30) is provided with rounded corners.

5. The projection device with adjustable operating height according to claim 4, characterized in that: The outer wall of the fixed sleeve (8) is provided with a sliding groove (13), and a sliding sleeve (14) is slidably provided in the sliding groove (13). An unlocking sleeve (15) is fixedly provided on the inner side of the sliding sleeve (14).

6. The projection device with adjustable operating height according to claim 5, characterized in that: multiple sets A push spring (16) is provided between the card block (11) and the movable groove (9).

7. A projection device with adjustable operating height according to claim 6, characterized in that: The fixed sleeve (8) is provided with a limiting mechanism on the outside. The limiting mechanism includes a connecting sleeve (17) and a rotating sleeve (18). The connecting sleeve (17) is fixed on the bottom surface of the sliding sleeve (14). The rotating sleeve (18) rotates on the outer wall of the fixed sleeve (8). The outer wall of the connecting sleeve (17) is fixed with an installation block (19). The installation block (19) is provided with multiple sets and each of the installation blocks (19) is fixed with a limiting rod (20). The outer wall of the rotating sleeve (18) is fixed with a longitudinal rod (21). The longitudinal rod (21) is provided with multiple sets and each of the longitudinal rods (21) has a limiting hole (22) on its outer wall. The multiple sets of the limiting rods (20) are inserted into the limiting hole (22).

8. A projection device with adjustable operating height according to claim 7, characterized in that: The top of the limiting rod (20) and the outer side of the limiting hole (22) are all provided with rounded corners.

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