Teaching projector with adjusting mechanism

Abstract

The utility model discloses a teaching projector with an adjusting mechanism, which comprises a projector body, the projector body is provided with the adjusting mechanism, and the adjusting mechanism comprises a mounting frame, a first adjusting frame, a second adjusting frame, a connecting plate and a rotating shaft. The fixing mechanism comprises fixing sleeves, clamping blocks, fixing rods, clamping grooves, connecting rods, sliding sleeves, abutting sleeves, rotating sleeves, guide grooves and guide blocks, the multiple sets of fixing sleeves are installed on the outer sides of the first adjusting frame and the second adjusting frame correspondingly, and through the synergistic effect of the multiple sets of fixing sleeves and the clamping blocks, the fixing rods achieve accurate locking of the rotating shaft in a rotating and sliding mode; through cooperation of a connecting rod, a sliding sleeve and an abutting sleeve, through the elastic effect of a tension spring, a clamping block is firmly clamped in a fixing groove, so that the stability of the projector is ensured, and when the projector needs to be fixed, the sliding sleeve pushes the clamping block to be clamped in a clamping groove, and it is ensured that the position of the projector does not deviate in the teaching process.

Description

TECHNICAL FIELD

[0001] The utility model relates to modern teaching technical field, more specifically, it relates to a teaching projection apparatus with adjusting mechanism. BACKGROUND

[0002] In modern teaching environment, the projection apparatus has become indispensable teaching tool, is widely used in classroom teaching, demonstration and multimedia interaction etc. scene, because of the diversity of teaching content on the classroom and the different space layout, the projection apparatus needs to be able to flexibly adjust to the best projection angle, to adapt to different teaching needs, whether it is to explain blackboard content, show courseware or carry out video play, the angle adjustment of projection apparatus is crucial, however, the prior art usually only provides limited adjustment function, often cannot realize accurate and multidirectional angle adjustment, this makes the teacher need to frequently adjust the projection apparatus position in certain circumstances, both time-consuming and increase the risk of teaching interruption, difficult to realize quick switching and accurate positioning;

[0003] In addition to being able to flexibly adjust the projection apparatus angle, quickly and reliably fixed adjustment position is another important requirement for the projection apparatus in the teaching process, on the classroom, the teacher usually needs to quickly adjust the projection apparatus angle and immediately fix it in the required position, to ensure the smooth progress of teaching activities, in the prior art, the angle adjustment of projection apparatus often needs to be manually adjusted gradually and be fixed through complex rotation or tightness device, the process is relatively cumbersome, cannot provide quick and stable fixing effect, especially in teaching activities, when the projection angle needs to be frequently changed, if the fixing is unstable or the adjustment process is inconvenient, it can affect the teaching rhythm or cause the instability of equipment, and further affect the teaching effect. UTILITARY MODEL CONTENT

[0004] (I) technical problem solved

[0005] In view of the problems in the prior art, the utility model provides a teaching projection apparatus with adjusting mechanism to solve the technical problem that the angle adjustment of projection apparatus in the background art often needs to be manually adjusted gradually and be fixed through complex rotation or tightness device, the process is relatively cumbersome, cannot provide quick and stable fixing effect.

[0006] (II) technical scheme

[0007] In order to achieve the above object, the utility model provides the following technical scheme: A teaching projector with adjusting mechanism, including projector body, adjusting mechanism is arranged on the projector body, adjusting mechanism includes mounting bracket, first adjusting frame, second adjusting frame, connecting plate and rotating shaft, mounting bracket is installed outside the projector body, first adjusting frame is rotatably connected outside the mounting bracket through the rotating shaft, second adjusting frame is rotatably connected outside the first adjusting frame through the rotating shaft, connecting frame is rotatably connected at the top of second adjusting frame through the rotating shaft, a plurality of rotating shafts are provided with fixing mechanism, the fixing mechanism includes fixing sleeve, clamping block, fixed link, clamping groove, connecting rod, sliding sleeve, abutment sleeve, rotating sleeve, guide groove and guide block, fixing sleeve is provided with a plurality of groups and is installed outside first adjusting frame and second adjusting frame respectively, clamping block is provided with a plurality of groups and is slid in the outer wall of a plurality of fixing sleeves respectively, fixed link is installed at one end of a plurality of rotating shafts and rotates in the fixing sleeve, clamping groove is provided with a plurality of groups and is distributed on the outer wall of a plurality of fixed links respectively, connecting rod is installed at the top of a plurality of clamping blocks, sliding sleeve is slid in the outer wall of a plurality of fixing sleeves, abutment sleeve is installed at the bottom of a plurality of sliding sleeves, rotating sleeve is rotated in the outer wall of a plurality of fixing sleeves, guide groove is arranged on the outer wall of a plurality of sliding sleeves, and guide block is provided with a plurality of groups and is installed in the inner wall of a plurality of rotating sleeves respectively and is slidably connected with guide groove.

[0008] The utility model further sets up, a plurality of fixing sleeve outer walls all are provided with the sliding slot, a plurality of sliding slots are slidably connected with a plurality of sliding sleeves respectively, and the design makes the sliding sleeve can slide on the fixing sleeve smoothly, improves the flexibility and stability in the adjustment process, ensures that the connection between the fixing sleeve and the sliding sleeve is more closely, and the setting of sliding slot also helps to reduce the friction in the sliding process, prolongs the service life.

[0009] The utility model further sets up, a plurality of connecting rods bottom ends and abutment sleeve top ends all are provided with inclined plane and abut, and the inclined plane design makes the contact between the connecting rod and the abutment sleeve more closely, can provide better support in the adjustment process, ensures that the projector is more stable when fixing, and the design of inclined plane also helps to reduce the wear of contact surface, improves the durability of overall structure.

[0010] The utility model further sets up, a plurality of sliding sleeves all are equipped with the push board, a plurality of connecting rods top ends all are provided with the push block, and the design of push board and push block makes that user can realize the movement of sliding sleeve and connecting rod through simple manual operation in the adjustment process, improves the convenience and efficiency of adjustment, and the setting of push board and push block also makes the operation of whole adjusting mechanism more intuitive and easy to control.

[0011] The utility model further sets up, multiple guide grooves are all set up spiral and are connected with multiple guide blocks respectively, the design of spiral guide groove makes guide block can realize multidirectional adjustment in the sliding process, has improved the accuracy and flexibility of adjustment, and the setting of spiral guide groove also helps to increase the contact area between guide block and guide groove, improves the stability of overall structure, ensures that there is no loosening or deviation in the adjustment process.

[0012] The utility model further sets up, multiple connecting rods are all connected with fixed sleeve outer wall and are equipped with tension spring, the design of tension spring makes connecting rod can keep certain tension in the adjustment process, ensures that the connection between connecting rod and fixed sleeve is more closely, and the elastic effect of tension spring also helps to provide additional support in the fixing process, ensures that the projector is more stable after fixing, prevents loosening due to external interference.

[0013] The utility model further sets up, multiple fixed sleeve outer walls are all equipped with limiting mechanism, the limiting mechanism includes mounting ring, limiting block, limiting slot, lock sleeve and push spring, mounting ring is installed on multiple fixed sleeve outer walls, limiting block is provided with multiple and is slidably installed on multiple mounting rings respectively, limiting slot is provided with multiple and is arranged on multiple rotating sleeve outer walls respectively, lock sleeve slides on multiple fixed sleeve outer walls, push spring is provided with multiple and both ends are connected with multiple lock sleeve and fixed sleeve respectively, the design of limiting mechanism makes rotating sleeve can be locked in the required position accurately in the adjustment process, avoids the situation of excessive rotation or loosening, improves the accuracy and stability of adjustment, and the elastic effect of push spring also makes limiting block can easily separate from limiting slot, and operation is simple and efficient.

[0014] The utility model further sets up, multiple fixed sleeve outer walls are all equipped with limiting mechanism, the limiting mechanism includes mounting ring, limiting block, limiting slot, lock sleeve and push spring, mounting ring is installed on multiple fixed sleeve outer walls, limiting block is provided with multiple and is slidably installed on multiple mounting rings respectively, limiting slot is provided with multiple and is arranged on multiple rotating sleeve outer walls respectively, lock sleeve slides on multiple fixed sleeve outer walls, push spring is provided with multiple and both ends are connected with multiple lock sleeve and fixed sleeve respectively, the design of limiting mechanism makes rotating sleeve can be locked in the required position accurately in the adjustment process, avoids the situation of excessive rotation or loosening, improves the accuracy and stability of adjustment, and the elastic effect of push spring also makes limiting block can easily separate from limiting slot, and operation is simple and efficient.

[0015] (Three) beneficial effects

[0016] Compared with the prior art, the utility model provides a teaching projector with adjusting mechanism has the following beneficial effects:

[0017] 1、The adjusting mechanism can accurately adjust the angle and position of the projector through ingenious design, meet the needs in different teaching scenes, the mounting frame connects the projector body and the adjusting frame, the first adjusting frame and the second adjusting frame are connected through the rotating shaft, allowing users to flexibly adjust the direction of the projector, ensuring that the audience in the front row or the back row can clearly see the projection content, in addition, the setting of the connecting frame ensures the stability of the overall structure, so that the adjustment process is smooth and reliable, the rotating shaft, multiple guide blocks and guide grooves cooperate through precise design, ensuring the smoothness and efficiency of the adjustment, the angle of the projector can be quickly and accurately locked, this adjusting mechanism allows users to adjust the position of the projector in a short time as needed, improving the convenience and teaching efficiency.

[0018] 2、The design of the fixing mechanism can quickly and firmly fix the projector at the required position after adjusting the angle of the projector, through the cooperative action of multiple fixing sleeves and clamping blocks, the fixing rod realizes accurate locking of the rotating shaft through rotation and sliding, the cooperation of the connecting rod, the sliding sleeve and the abutting sleeve utilizes the elastic action of the tension spring to make the clamping block tightly clamped in the fixing groove, thereby ensuring the stability of the projector, when fixing is needed, the sliding sleeve pushes the clamping block to be clamped into the clamping groove, ensuring that the projector does not shift position during teaching, this mechanism greatly improves the efficiency and safety of fixing, avoiding the situation that the teaching quality is affected due to unstable position during projection.

[0019] 3、The limiting mechanism further enhances the reliability of the adjustment and fixing functions, through the cooperation of the mounting ring, the limiting block and the limiting groove, the position of the rotating sleeve is effectively limited, avoiding the situation of over-rotation or loosening during adjustment, the design of the lock sleeve and the push spring ensures that the limiting block can tightly clamp the rotating sleeve after adjustment is completed, stabilizing its position and preventing loosening or shifting due to external interference, when unlocking is needed, the cooperative action of the push spring and the return spring makes the limiting block easily disengage from the limiting groove, releasing the rotating sleeve, the operation is simple and efficient, the design of this limiting mechanism makes the projector more accurate and reliable during multiple angle adjustments, while ensuring the stability and safety of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a whole structure schematic diagram of the teaching projector with an adjusting mechanism in the utility model;

[0021] Figure 2 It is a structure schematic diagram of the first adjusting frame in the utility model;

[0022] Figure 3 It is a sectional structure schematic diagram of the fixing mechanism in the utility model;

[0023] Figure 4It is the structure schematic view of the sliding sleeve in the utility model.

[0024] Figure 5 It is the sectional structure schematic view of the limiting mechanism in the utility model.

[0025] In the figure: 1, projector body;2, mounting frame;3, first adjusting frame;4, second adjusting frame;5, connecting plate;6, rotating shaft;7, fixed sleeve;8, clamping block;9, fixed rod;10, clamping groove;11, connecting rod;12, sliding sleeve;13, abutting sleeve;14, rotating sleeve;15, guide groove;16, guide block;17, sliding groove;18, push plate;19, push block;20, tension spring;21, mounting ring;22, limiting block;23, limiting groove;24, lock sleeve;25, push spring;26, reset spring. DETAILED DESCRIPTION

[0026] It should be noted that, in the case of no conflict, the embodiments and the features in the embodiments in the application can be combined with each other. The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in the application have the same meaning as that generally understood by the ordinary skilled person in the technical field to which the application belongs.

[0028] In the utility model, in the case of no opposite statement, the direction such as "up, down" used is usually for the direction shown in the drawing, or for the vertical, perpendicular or gravity direction;Similarly, for the convenience of understanding and description, "left, right" is usually for the left and right shown in the drawing;"Inner, outer" refers to the inner and outer relative to the contour of each component itself, but the above direction words are not used to limit the utility model.

[0029] Please refer to Figures 1-5The utility model provides a kind of teaching projector with adjusting mechanism, including projector body 1, adjusting mechanism is provided on projector body 1, adjusting mechanism includes mounting frame 2, first adjusting frame 3, second adjusting frame 4, connecting plate 5 and rotating shaft 6, mounting frame 2 is installed on the outside of projector body 1, first adjusting frame 3 is rotatably connected on the outside of mounting frame 2 by rotating shaft 6, second adjusting frame 4 is rotatably connected on the outside of first adjusting frame 3 by rotating shaft 6, connecting frame is rotatably connected in second adjusting frame 4 top by rotating shaft 6, fixed mechanism is set on multiple rotating shafts 6, fixed mechanism includes fixed sleeve 7, clamping block 8, fixed rod 9, clamping groove 10, connecting rod 11, sliding sleeve 12, abutment sleeve 13, rotating sleeve 14, guide groove 15 and guide block 16, fixed sleeve 7 is provided with multiple groups and is installed on the outside of first adjusting frame 3 and second adjusting frame 4 respectively, clamping block 8 is provided with multiple groups and is slid in the outer wall of multiple fixed sleeves 7 respectively, fixed rod 9 is installed in one end of multiple rotating shafts 6 and rotates in fixed sleeve 7, clamping groove 10 is provided with multiple groups and is distributed on the outer wall of multiple fixed rods 9 respectively, connecting rod 11 is installed in the top of multiple clamping blocks 8, sliding sleeve 12 is slid in the outer wall of multiple fixed sleeves 7, abutment sleeve 13 is installed in the bottom of multiple sliding sleeves 12, rotating sleeve 14 is rotated in the outer wall of multiple fixed sleeves 7, guide groove 15 is provided in the outer wall of multiple sliding sleeves 12, and guide block 16 is provided with multiple groups and is installed in the inner wall of multiple rotating sleeves 14 respectively and is slidably connected with guide groove 15.

[0030] The outer wall of multiple fixed sleeves 7 is provided with sliding groove 17, and the sliding groove 17 is slidably connected with the sliding sleeve 12.

[0031] The bottom end of the connecting rod 11 and the top end of the abutment sleeve 13 are provided with inclined surfaces and abut against each other.

[0032] The sliding sleeve 12 is provided with a push plate 18, and the top end of the connecting rod 11 is provided with a push block 19.

[0033] The plurality of groups of guide grooves 15 are arranged in a spiral shape and are respectively in sliding connection with the plurality of groups of guide blocks 16. The spiral-shaped guide grooves 15 enable the guide blocks 16 to be adjusted in multiple directions during sliding, thereby improving the accuracy and flexibility of adjustment. Meanwhile, the spiral-shaped guide grooves 15 also help to increase the contact area between the guide blocks 16 and the guide grooves 15, thereby improving the stability of the overall structure and ensuring that loosening or deviation does not occur during adjustment.

[0034] The plurality of groups of connecting rods 11 are respectively connected between the inner sides of the plurality of groups of connecting rods 11 and the outer walls of the plurality of groups of fixed sleeves 7. The design of the plurality of groups of tension springs 20 enables the connecting rods 11 to always maintain a certain tension during adjustment, thereby ensuring that the connection between the connecting rods 11 and the fixed sleeves 7 is more secure. Meanwhile, the elastic action of the plurality of groups of tension springs 20 also helps to provide additional support during fixing, thereby ensuring that the projector is more stable after being fixed and preventing loosening due to external interference.

[0035] In this embodiment, first, the mounting frame 2 is mounted on the outside of the projector body 1 and is fixed in place. The first adjustment frame 3 is connected to the mounting frame 2 through the rotating shaft 6, and the user can adjust the angle or position of the projector by rotating the first adjustment frame 3. Further, the second adjustment frame 4 is connected to the first adjustment frame 3 through the rotating shaft 6, and the user can further adjust the position of the projector by rotating the second adjustment frame 4. The connecting frame is connected to the top end of the second adjustment frame 4 through the rotating shaft 6, thereby ensuring the stability of the overall structure. During adjustment, the adjustment mechanism can accurately control the position and angle of the projector, thereby meeting different viewing angles and projection requirements. When it is necessary to fix the rotating shaft 6, the rotating sleeve 14 is rotated through the plurality of groups of guide blocks 16 and the spiral-shaped guide grooves 15, thereby causing the sliding sleeve 12 to slide upward along the sliding groove 17. The plurality of groups of tension springs 20 are respectively pulled to push the plurality of groups of clamping blocks 8 to be clamped in the clamping grooves 10. Meanwhile, the lock sleeve 24 is abutted against the bottom ends of the plurality of groups of connecting rods 11. Finally, the rotating sleeve 14 is locked through the positioning mechanism, thereby completing the fixing of the rotating shaft 6. When it is necessary to unlock, the positioning mechanism is released to unlock the rotating sleeve 14. The plurality of groups of guide blocks 16 are rotated in the reverse direction, and the plurality of groups of guide blocks 16 and the spiral-shaped guide grooves 15 are in sliding connection, thereby causing the sliding sleeve 12 to slide along the sliding groove 17. The sliding sleeve 12 pushes the lock sleeve 24 to release the abutment with the bottom ends of the plurality of groups of connecting rods 11. Meanwhile, the push plate 18 is in contact with the plurality of groups of push blocks 19 and pushes the push blocks 19 to move outward and stretch the tension springs 20. The push blocks 19 drive the connecting rods 11 and the plurality of groups of clamping blocks 8 to move outward, thereby causing the plurality of groups of clamping blocks 8 to be disengaged from the clamping grooves 10 and release the clamping of the fixed rod 9. Then, the fixing of the fixed rod 9 can be released.

[0036] Please refer to Figures 3-5As an embodiment of the limiting mechanism: the outer wall of the plurality of fixing sleeves 7 is provided with a limiting mechanism, the limiting mechanism includes a mounting ring 21, a limiting block 22, a limiting groove 23, a lock sleeve 24 and a push spring 25, the mounting ring 21 is installed on the outer wall of the plurality of fixing sleeves 7, the limiting block 22 is provided with a plurality of groups respectively slidingly installed on the plurality of mounting rings 21, the limiting groove 23 is provided with a plurality of groups respectively arranged on the outer wall of the plurality of rotating sleeves 14, the lock sleeve 24 slides on the outer wall of the plurality of fixing sleeves 7, and the push spring 25 is provided with a plurality of groups and the two ends are respectively connected with the plurality of lock sleeves 24 and the fixing sleeves 7.

[0037] The plurality of clamping blocks 8 are provided with a reset spring 26 inside, the bottom end of the plurality of reset springs 26 is respectively connected with the plurality of mounting rings 21, the design of the reset spring 26 makes the clamping block 8 always maintain a certain elastic force during the fixing process, ensures that the clamping block 8 can be firmly clamped in the fixing groove, improves the reliability and safety of the fixing, and the elastic effect of the reset spring 26 also makes the clamping block 8 quickly reset when the lock is released, which is simple and efficient to operate.

[0038] More specifically, the plurality of push springs 25 push the lock sleeve 24 to abut against the outer side of the plurality of limiting blocks 22, so that the bottom end of the plurality of limiting blocks 22 is clamped in the limiting groove 23 and the plurality of reset springs 26 are extruded, thereby limiting the position of the rotating sleeve 14, when unlocking is needed, the lock sleeve 24 is pushed upward to release the abutment of the top end of the plurality of limiting blocks, the limiting block 22 is pushed outward by the elastic reset of the plurality of reset springs 26, so that the bottom end of the plurality of limiting blocks 22 is separated from the limiting groove 23 to release the lock of the rotating sleeve 14.

[0039] In summary, when the overall device is in use or operation: first, the mounting frame 2 is installed on the outside of the projector body 1 and fixed in place. The first adjusting frame 3 is connected to the mounting frame 2 through the rotating shaft 6, and the user can adjust the angle or position of the projector by rotating the first adjusting frame 3. Further, the second adjusting frame 4 is connected to the first adjusting frame 3 through the rotating shaft 6, and the user can further adjust the position of the projector by rotating the second adjusting frame 4. The connecting frame is connected to the top end of the second adjusting frame 4 through the rotating shaft 6, ensuring the stability of the overall structure. During the adjustment process, the adjusting mechanism can accurately control the position and angle of the projector, meeting different viewing angles and projection requirements. When it is necessary to fix the rotating shaft 6, the rotating sleeve 14 is rotated through the sliding cooperation of the plurality of guide blocks 16 and the spiral guide groove 15, causing the sliding sleeve 12 to slide upward along the sliding groove 17. The plurality of pull springs 20 are pulled respectively to pull the plurality of connecting rods 11 and push the plurality of clamping blocks 8 to be clamped in the clamping grooves 10. At the same time, the locking sleeve 24 is abutted against the bottom end of the plurality of connecting rods 11. Finally, the rotating sleeve 14 is locked through the positioning mechanism, and the fixing of the rotating shaft 6 is completed. When it is necessary to unlock, the locking of the rotating sleeve 14 by the limiting mechanism is released, the plurality of guide blocks 16 are rotated in the reverse direction, and the sliding cooperation of the plurality of guide blocks 16 and the spiral guide groove 15 causes the sliding sleeve 12 to slide along the sliding groove 17. The sliding sleeve 12 pushes the locking sleeve 24 to release the abutment with the bottom end of the plurality of connecting rods 11. At the same time, the push plate 18 contacts the plurality of push blocks 19 and pushes the push blocks 19 outward to stretch the pull springs 20. The push blocks 19 drive the connecting rods 11 and the plurality of clamping blocks 8 to move outward, causing the plurality of clamping blocks 8 to disengage from the clamping grooves 10 and release the clamping of the fixing rod 9. Then the fixing of the fixing rod 9 can be released.

[0040] The plurality of push springs 25 push the locking sleeve 24 to abut against the outside of the plurality of limiting blocks 22, causing the bottom end of the plurality of limiting blocks 22 to be clamped in the limiting grooves 23 and to press the plurality of return springs 26, thereby limiting the position of the rotating sleeve 14. When it is necessary to unlock, the locking sleeve 24 is pushed upward to release the abutment with the top end of the plurality of limiting blocks. The plurality of limiting blocks 22 are pushed outward by the elastic return of the plurality of return springs 26, causing the bottom end of the plurality of limiting blocks 22 to disengage from the limiting grooves 23 and release the locking of the rotating sleeve 14.

[0041] In all the schemes mentioned above, the connection between the two components can be selected according to the actual situation, such as welding, bolt and nut cooperation connection, bolt or screw connection, or other known connection methods, which will not be described one by one. In the above, whenever there is a fixed connection, welding is preferred. Although embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application. The scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A teaching projector having an adjustment mechanism, comprising a projector body (1), characterized in that: The adjusting mechanism is arranged on the projector body (1), and comprises a mounting frame (2), a first adjusting frame (3), a second adjusting frame (4), a connecting plate (5) and a rotating shaft (6). The mounting frame (2) is mounted on the outer side of the projector body (1), the first adjusting frame (3) is rotatably connected to the outer side of the mounting frame (2) through the rotating shaft (6), the second adjusting frame (4) is rotatably connected to the outer side of the first adjusting frame (3) through the rotating shaft (6), the connecting frame is rotatably connected to the top end of the second adjusting frame (4) through the rotating shaft (6), and a plurality of fixing mechanisms are arranged on the rotating shafts (6).

2. A teaching projector with an adjustment mechanism according to claim 1, characterized in that: multiple sets of... The outer wall of the fixing sleeve (7) is provided with a plurality of sliding grooves (17), and the sliding grooves (17) are slidably connected with the sliding sleeves (12).

3. The teaching projector with an adjusting mechanism according to claim 2, characterized in that the plurality of groups of the adjusting mechanism are arranged in a plurality of layers. 5 The bottom end of the connecting rod (11) and the top end of the abutting sleeve (13) are provided with inclined surfaces and abut against each other.

4. The educational projector with a regulating mechanism according to claim 3, characterized in that: A plurality of sliding sleeves (12) are provided with a plurality of push plates (18), and a plurality of push blocks (19) are arranged at the top end of the connecting rod (11).

5. The educational projector with a regulating mechanism according to claim 4, characterized in that: A plurality of the guide grooves (15) are arranged in a spiral shape and are slidably connected with a plurality of the guide blocks (16).

6. The educational projector with a regulating mechanism according to claim 5, characterized in that: A plurality of the connecting rods (11) are connected with the outer wall of the fixing sleeve (7) through the pull spring (20).

7. The teaching projector with an adjusting mechanism according to claim 6, characterized in that the plurality of groups of the adjusting mechanism are arranged in a circle. The outer wall of the fixing sleeve (7) is provided with a plurality of limiting mechanisms, and the limiting mechanism comprises a mounting ring (21), a limiting block (22), a limiting groove (23), a locking sleeve (24) and a push spring (25). The mounting ring (21) is mounted on the outer wall of the fixing sleeve (7), the limiting block (22) is provided with a plurality of sliding mounting rings (21), the limiting groove (23) is provided with a plurality of rotating sleeves (14), the locking sleeve (24) is slidably arranged on the outer wall of the fixing sleeve (7), and the push spring (25) is provided with a plurality of locking sleeves (24) and fixing sleeves (7).

8. The teaching projector with an adjusting mechanism according to claim 7, characterized in that the plurality of groups of the adjusting mechanism are arranged in a plurality of layers. The inner side of the clamping block (8) is provided with a plurality of reset springs (26), and the bottom end of the reset spring (26) is connected with a plurality of mounting rings (21).

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