Multi-angle projector with lens protection function

Abstract

The utility model discloses a multi-angle projector with a lens protection function. The multi-angle projector comprises a machine body, a base and an adjusting part, the machine body is provided with a protruding part used for installing a lens. The top of the base is provided with a surrounding cavity with an upward opening and corresponding to the protruding part. A support is further installed on the base. The adjusting piece comprises a sliding block and a rotating block, and the rotating block is fixedly connected with the sliding block and hinged to the machine body in a damping mode so that the machine body can rotate around the axis direction of the rotating block. The sliding block is installed on the support in a sliding mode so that the machine body can move up and down in the vertical direction. When the machine body moves downwards in the vertical direction, the protruding part can be driven to be inserted into the surrounding cavity; when the machine body is moved upwards in the vertical direction, the protruding part can be driven to be separated from the surrounding cavity to expose the lens, and the projection angle of the lens can be adjusted by rotating the machine body around the rotating block; compared with the prior art, the above structural design not only can comprehensively seal the lens and prevent the lens from being collided and contaminated by dust, but also can adjust the projection angle of the lens and improve the overall use experience.

Description

Technical Field

[0001] This utility model belongs to the field of projector technology, and in particular relates to a multi-angle projector with lens protection function. Background Technology

[0002] Projectors are used to provide visual information to people. With the development of electronic technology, projectors have become smaller and more portable. However, projector lenses are relatively fragile and are easily scratched and damaged when carried.

[0003] To address this issue, utility model patent application number 2016208722693 proposes a portable projector, which mainly includes a protective cover and a body with a lens. The protective cover has side plates at both ends, and the free ends of the two side plates are rotatably connected to the middle of the two sides of the body. When carrying the projector, the protective cover can rotate to cover the lens. When using the projector, the protective cover and side plates act as a support, and the projection angle of the lens can be adjusted by rotating the body. This technical solution not only protects the lens but also provides the function of adjusting the lens angle, making it a superior choice for users.

[0004] However, in actual use, it was found that in order for the protective cover to rotate around the body normally, the body needs to leave a certain amount of space at the edge of the lens. When the protective cover passes through the space and blocks the lens, a gap will inevitably be formed in the space, which will prevent the lens from being completely sealed. Dust can easily pass through the gap and contaminate the lens, affecting the image quality. Therefore, it is necessary to design a new projector to solve this problem. Utility Model Content

[0005] Technical problems to be solved

[0006] This invention provides a multi-angle projector with lens protection function, which can not only completely seal the lens to prevent it from being bumped or contaminated with dust, but also adjust the projection angle of the lens to improve the overall user experience.

[0007] Technical solution

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A multi-angle projector with lens protection function includes a body, a base, and an adjustment component. The body has a protrusion for mounting a lens. The top of the base has an upward-facing opening corresponding to the protrusion, and a bracket is also mounted on the base. The adjustment component includes a slider and a rotating block. The rotating block is fixed to the slider and damp-hinged with the body, allowing the body to rotate about the axis of the rotating block. The slider is slidably mounted on the bracket, allowing the body to move vertically up and down.

[0010] Moving the body downwards vertically can cause the protrusion to insert into the cavity; moving the body upwards vertically can cause the protrusion to detach from the cavity and expose the lens. At this time, rotating the body around the rotating block can adjust the projection angle of the lens.

[0011] Preferably, the cavity is concave and the edges of the cavity are chamfered inward; the protrusion is convex and the edges of the protrusion are chamfered outward, so that the protrusion can be tightly inserted into the cavity.

[0012] Preferably, the protrusion has a mounting hole in the middle, and the lens is fixedly installed in the mounting hole.

[0013] Preferably, a slide block is installed inside the bracket, the slide block is provided with a vertically designed slide groove, and a movable groove is opened on the side wall of the slide groove, which extends through the bracket to the outside; the slider is slidably connected to the slide groove, the rotating block is located in the movable groove, and the rotating block can move along the movable groove as the slider moves.

[0014] Preferably, it further includes a pop-out structure, which includes an elastic element and a locking element, and a stop block is installed inside the bracket; the elastic element is disposed inside the bracket and abuts against the slider and the stop block, and when the protrusion is inserted into the surrounding cavity, the elastic element deforms and stores energy; the locking element is installed on the bracket and can lock or release the slider.

[0015] Preferably, the elastic element is a spring, the abutment block has an insertion hole inside, the slider has an insertion post, one end of the spring is placed in the insertion hole, and the other end of the spring is sleeved on the insertion post.

[0016] Preferably, the locking element is a bolt, which is threadedly connected to the bracket, and one end of the bolt can penetrate into the interior of the bracket to tighten or loosen the slider.

[0017] Preferably, the locking element includes a rocker arm, a coil spring, and a button. The bracket has a keyway, and the slider has a latch. The rocker arm is rotatably mounted inside the bracket and located beside the slider, and the first end of the rocker arm has a hook corresponding to the latch. The coil spring is mounted at the connection between the rocker arm and the bracket to give the rocker arm an inward swing tendency. The button is movably mounted at the keyway and corresponds to the second end of the rocker arm. Pressing the button can drive the rocker arm to swing outward and cause the coil spring to deform and store energy. When the elastic element deforms and stores energy, the hook engages with the latch to lock the slider. When the button is pressed, the hook disengages from the latch to release the slider, the elastic element releases energy and restores its original state, and causes the slider to move upward.

[0018] Preferably, the bayonet slots are provided in a multiple linear array on the slider, and the hooks can engage or disengage from any of the bayonet slots one by one.

[0019] Preferably, a sound-silencing pad is provided on the inner wall of the slide groove, and the inner wall of the slider is in contact with the sound-silencing pad.

[0020] Preferably, the base is provided with a power storage unit and / or a power receiving unit, and the body is provided with a control unit; the bracket is provided with a wiring channel, and the rotating block is provided with a hollow wiring hole; the power storage unit and / or the power receiving unit are wired through the wiring channel and the wiring hole to be electrically connected to the control unit.

[0021] (III) Beneficial Effects

[0022] This utility model provides a multi-angle projector with lens protection function. A bracket is designed on the base to support the projector body, and a movable slider is designed inside the projector body to adjust its vertical position. This allows the protruding part of the projector body to detach from or insert into the surrounding cavity. Since the protruding part inserts directly into the cavity, the gap between the lens and the base is eliminated, achieving complete lens sealing and preventing the lens from being bumped or contaminated with dust during travel. A rotating block installed on the slider, which is hinged to the damping mechanism of the projector body, allows the projector body to rotate and stop, facilitating user adjustment of the lens's transmission angle and improving the overall user experience. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0024] Figure 1 A schematic diagram of the overall structure of this utility model is shown. Figure 1 ;

[0025] Figure 2 It shows Figure 1 A sectional view;

[0026] Figure 3 It shows Figure 2 Enlarged view of point A in the middle;

[0027] Figure 4 It shows Figure 1 Partial structural diagram;

[0028] Figure 5 It shows Figure 4 Enlarged view of point B in the middle;

[0029] Figure 6 A schematic diagram of the overall structure of this utility model is shown. Figure 2 ;

[0030] Figure 7 It shows Figure 6 Partial structural diagram;

[0031] Figure 8 It shows Figure 7 Enlarged view of point C in the middle;

[0032] Figure 9 A schematic diagram of the structure of the bracket and adjusting component of this utility model is shown;

[0033] Figure 10 It shows Figure 9 Enlarged view at point D;

[0034] Figure 11 The diagram shows the structure of the adjusting member and the slide of this utility model. Figure 1 ;

[0035] Figure 12 The diagram shows the structure of the adjusting member and the slide of this utility model. Figure 2 ;

[0036] Figure 13 It shows Figure 12 The main view;

[0037] Figure 14 A schematic diagram showing the connection between the main body and the adjusting components of this utility model is provided.

[0038] Figure 15 An exploded view of the adjusting component of this utility model is shown.

[0039] In the diagram: 1 Body, 11 Protrusion, 110 Mounting Hole, 12 Lens, 2 Base, 21 Enclosure, 22 Bracket, 220 Cable Management Channel, 23 Slide, 231 Slide Groove, 232 Movable Groove, 24 Stop Block, 240 Insertion Hole, 25 Keyway, 26 Soundproofing Pad, 3 Adjustment Component, 31 Slider, 310 Insertion Post, 31k Bayonet, 32 Rotating Block, 320 Cable Management Hole, 4 Pop-up Structure, 41 Elastic Component, 42 Locking Component, 421 Swing Rod, 421k Hook, 422 Coil Spring, 423 Button. Detailed Implementation

[0040] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this application.

[0041] See appendix Figure 1 -Appendix Figure 15A multi-angle projector with lens protection function includes a body 1, a base 2, and an adjustment component 3. The body 1 has a protrusion 11 for mounting a lens 12. The top of the base 2 has an upward-opening cavity 21 corresponding to the protrusion 11, and a bracket 22 is also mounted on the base 2. The adjustment component 3 includes a slider 31 and a rotating block 32. The rotating block 32 is fixed to the slider 31 and dampedly hinged to the body 1 so that the body 1 can rotate around the axis of the rotating block 32. The slider 31 is slidably mounted on the bracket 22 so that the body 1 can move up and down in the vertical direction. During the process of the body 1 moving up and down in the vertical direction, the protrusion 11 can disengage from or engage with the cavity 21. After the protrusion 11 disengages from the cavity 21, the body 1 can be rotated around the rotating block 32 to adjust the projection angle of the lens 12.

[0042] Specifically, under normal circumstances, the protrusion 11 is inserted into the cavity 21. This not only allows the body 1 and the base 2 to be fixed together, preventing the body 1 from shaking and improving portability, but also fully protects the lens 12, preventing the lens 12 from being contaminated by dust.

[0043] When in use, hold the body 1 and apply upward force to drive the slider 31, so that the body 1 moves upward and ensures that the protrusion 11 disengages from the cavity 21 and exposes the lens 12. At this time, place the base 2 on the table and rotate the body 1 around the rotating block 32 to adjust the projection angle of the lens 12. Since the rotating block 32 and the slider 31 are damped and hinged, the adjusted lens 12 can be stably stopped. After use, first rotate the body 1 around the rotating block 32 to return it to its original position and ensure that the protrusion 11 is aligned with the cavity 21. Then move the body 1 down vertically until the protrusion 11 is re-inserted into the cavity 21.

[0044] In summary, this utility model features a bracket 22 on the base 2 to support the body 1, and a movable slider 31 inside the body 1 to adjust its vertical position. This allows the protrusion 11 of the body 1 to detach from or insert into the cavity 21. Since the protrusion 11 is inserted directly into the cavity 21, the gap between the lens 12 and the base 2 is eliminated, achieving complete sealing of the lens 12 and preventing it from being bumped or contaminated with dust during transport. By installing a rotating block 32 on the slider 31 that is damped and hinged to the body 1, the body 1 can rotate and stop, facilitating user adjustment of the transmission angle of the lens 12 and improving the overall user experience.

[0045] It should be noted that the slider 31 and the bracket 22 can be either a damped sliding fit or a conventional sliding fit. The advantages and disadvantages of the two methods are as follows:

[0046] Firstly, if the slider 31 and the bracket 22 are in a damped sliding fit, the disadvantage is that the user needs to overcome both the weight of the body 1 and the damping force when moving the body 1 upward, which is more physically demanding and has a higher manufacturing cost. The advantage is that after the body 1 is moved upward, it can stop at the current position by relying on the damping force between the slider 31 and the bracket 22, which makes it convenient for the user to directly rotate the body 1 to adjust the angle of the lens 12.

[0047] Secondly, if the slider 31 and the bracket 22 are in a conventional sliding fit, the advantage is that the user only needs to overcome the gravity of the body 1 to move the body 1 up, which is relatively effortless; the disadvantage is that the body 1 cannot stop after it is moved up, so it is necessary to first rotate the body 1 so that the lens 12 is offset from the base 2, then move the body 1 down to complete the fixation, and finally rotate the body 1 again to adjust the angle of the lens 12, which is a rather cumbersome process.

[0048] Therefore, the manufacturer can choose the sliding fit method between the slider 31 and the bracket 22 according to the user's needs, and this utility model does not impose any restrictions on this.

[0049] It should also be noted that there are various ways to damped connect the body 1 and the rotating block 32. For example, the connection between the body 1 and the rotating block 32 can be designed as an overfit, or a damper can be installed at the connection between the body 1 and the rotating block 32. Since there are various ways, this invention and utility model do not limit or elaborate on them.

[0050] See appendix Figure 2 and attached Figure 6 The cavity 21 is concave, and the edge of the cavity 21 is chamfered inward; the protrusion 11 is convex, and the edge of the protrusion 11 is chamfered outward. This design allows the edge of the protrusion 11 to fit more tightly against the edge of the cavity 21, avoiding the formation of gaps, improving the sealing between the protrusion 11 and the cavity 21, and reducing the possibility of dust entering; at the same time, the chamfer design can also prevent users from scratching and improve the overall aesthetics of the product.

[0051] See appendix Figure 2 and attached Figure 6 The protrusion 11 has a mounting hole 110 in the middle, and the lens 12 is fixedly installed in the mounting hole 110. This design allows the lens 12 to be lower than the surface of the protrusion 11, thus avoiding the lens 12 from contacting the bottom wall of the cavity 21 and being worn.

[0052] See appendix Figure 9 -Appendix Figure 15There are various ways to slide the slider 31 and the bracket 22, and this utility model does not limit this. In order to make the connection structure more compact, in this embodiment, a slide seat 23 is installed inside the bracket 22. The slide seat 23 is provided with a vertically designed slide groove 231. A movable groove 232 that penetrates the bracket 22 to the outside is opened on the side wall of the slide groove 231. The slider 31 is slidably connected to the slide groove 231. The rotating block 32 is located in the movable groove 232, and the rotating block 32 can move along the movable groove 232 as the slider 31 moves.

[0053] Specifically, the base design allows the slider 31 to be slidably installed in the bracket 22, reducing the space occupied in the installation; while the design of the movable groove 232 allows the rotating block 32 to move on one hand, and on the other hand, it restricts the vertical movement range of the rotating block 32, which can prevent the body 1 from moving down or up excessively, thus improving the stability of use.

[0054] See appendix Figure 2 -Appendix Figure 10 The present invention also includes a pop-out structure 4, which includes an elastic element 41 and a locking element 42. A stop block 24 is installed inside the bracket 22. The elastic element 41 is disposed inside the bracket 22 and abuts against the slider 31 and the stop block 24. When the protrusion 11 is inserted into the surrounding cavity 21, the elastic element 41 deforms and stores energy. The locking element 42 is installed on the bracket 22 and can lock or release the slider 31.

[0055] Specifically, under normal circumstances, the protrusion 11 is inserted into the cavity 21, the elastic element 41 deforms and stores energy, and the locking element 42 locks the slider 31 to make the base and the base 2 stably connected; when the body 1 needs to be used, the locking element 42 is controlled to release the slider 31, the elastic element 41 releases energy and restores itself and drives the slider 31 to move upward, and the sliding block drives the body 1 to move upward through the rotating block 32, so that the protrusion 11 is separated from the cavity 21 and the lens 12 is exposed. At this time, the body 1 can be rotated so that the lens 12 is aligned with the background wall or screen to be projected.

[0056] After use, first rotate the body 1 around the rotating block 32 to return to its original position, then move the body 1 down vertically so that the protrusion 11 re-inserts into the surrounding cavity 21, and then control the locking member 42 to lock the slider 31 again. At this time, the elastic member 41 deforms and stores energy for the next use.

[0057] In summary, the combined use of the elastic element 41 and the locking element 42 enables the slider 31 to move automatically upward. When the user uses the body 1, the locking element 42 can be controlled to make the body 1 pop out automatically, further improving the user experience.

[0058] See appendix Figure 9 -Appendix Figure 10The elastic element 41 is a spring, the abutment 24 has an insertion hole 240 inside, the slider 31 has an insertion post 310, one end of the spring is placed in the insertion hole 240, and the other end of the spring is fitted with the insertion post 310.

[0059] The elastic element 41 can also be a rubber sleeve, an elastic plastic sleeve, etc. Due to the variety of types, this utility model does not limit this. For ease of understanding, this utility model uses a spring as an example. When the elastic element 41 is a spring, the matching design of the insertion hole 240 and the insertion post 310 can make the spring stably installed in the bracket 22, avoiding the spring from swinging randomly and affecting the movement of the slider 31.

[0060] See appendix Figure 5 -Appendix Figure 10 The locking component 42 includes a rocker arm 421, a coil spring 422, and a button 423. The bracket 22 is provided with a keyway 25, and the slider 31 is provided with a latch 31k. The rocker arm 421 is rotatably mounted inside the bracket 22 and located next to the slider 23, and the first end of the rocker arm 421 is provided with a hook 421k corresponding to the latch 31k. The coil spring 422 is installed at the connection between the rocker arm 421 and the bracket 22 so that the rocker arm 421 has an inward swing tendency. The button 423 is movably mounted at the keyway 25 and corresponds to the second end of the rocker arm 421. Pressing the button 423 can drive the rocker arm 421 to swing outward and drive the coil spring 422 to deform and store energy.

[0061] Specifically, under normal circumstances, the protrusion 11 is inserted into the surrounding cavity 21, the elastic element 41 deforms and stores energy, and the hook 421k engages with the bayonet 31k to lock the slider 31, thereby making the base and the base 2 stably connected; when the body 1 needs to be used, the button 423 is pressed to abut against the second end of the swing arm 421, causing the hook 421k to disengage from the bayonet 31k and release the slider 31. At this time, the elastic element 41 releases energy and restores its function, causing the slider 31 to move upward, so that the protrusion 11 disengages from the surrounding cavity 21 and exposes the lens 12, while the coil spring 422 is in a deformable and energy-storing state.

[0062] After use, first rotate the body 1 around the rotating block 32 to return to its original position, then move the body 1 down vertically so that the protrusion 11 re-inserts into the cavity 21. During this process, the elastic element 41 deforms and stores energy. When the latch 31k on the slider 31 moves down to align with the hook 421k, the coil spring 422 releases energy and restores its original position, causing the swing arm 421 to swing inward, so that the hook 421k re-engages with the latch 31k to lock the slider 31.

[0063] In summary, the combined use of the rocker arm 421, the coil spring 422, and the button 423 allows the rocker arm 421 to be driven or automatically reset. Under this design premise, the combined use of the bayonet 31k and the hook 421k allows the elastic element 41 to work at the appropriate time, making it convenient for users to automatically pop out the body 1 by "one-click pressing", further improving the user experience.

[0064] It should be noted that, in addition to the structure described above, the locking element 42 can also be a bolt (not shown in the figure). The bolt is threaded to the bracket 22, and one end of the bolt can penetrate into the interior of the bracket 22. By rotating the bolt in the forward or reverse direction, one end of the bolt can be driven to press against or release the slider 31. In addition, the locking element 42 can also adopt other structures with limiting functions. Since there are many types of related structures and they are relatively common in the mechanical field, no restrictions are placed on them in this invention and utility model.

[0065] See appendix Figure 9 -Appendix Figure 14 If there is only one bayonet 31k, when the hook 421k disengages from the bayonet 31k, the body 1 is supported only by the spring force, which makes the body 1 easy to shake. Moreover, if the button 423 is released at this time, the hook 421k will abut against the side wall of the slider 31, which will easily damage the coil spring 422 after long-term use. To solve this problem, in this utility model, there are multiple bayonet 31k arranged in a straight line on the slider 31, and the hook 421k can engage or disengage from any bayonet 31k one by one.

[0066] Specifically, for ease of understanding, assume there are three checkpoints 31k, which are numbered from top to bottom as the first checkpoint, the second checkpoint, and the third checkpoint;

[0067] When the protrusion 11 is inserted into the cavity 21, the hook 421k can engage with the third slot to fix the body 1 onto the base 2.

[0068] When the user presses button 423 to drive hook 421k out of the third latch, elastic element 41 releases energy and pushes up slider 31, so that the first latch aligns with hook 421k. At this time, when button 423 is released, hook 421k will engage with the first latch under the action of coil spring 422, so as to fix the body 1 at the current height position and prevent the body 1 from shaking up and down.

[0069] When the height of the body 1 needs to be adjusted, press button 423 again to disengage the hook 421k from the first latch. Then press down on the body 1 until the second latch aligns with the hook 421k. Then release button 423 to allow the hook 421k to engage with the second latch and fix the body 1 at the current height position.

[0070] Therefore, the combination of the hook 421k and multiple bayonets 31k enables the adjustment of the height position of the body 1, and at the same time, it allows the body 1 to be directly fixed when adjusted to a specific height position, preventing the body 1 from shaking randomly and affecting the projection effect.

[0071] See appendix Figure 3 and attached Figure 9 The inner wall of the slide groove 231 is provided with a sound-absorbing pad 26, and the inner wall of the slider 31 is in contact with the sound-absorbing pad 26. During the sliding process, the slider 31 rubs against the sound-absorbing pad 26. The sound-absorbing pad 26 can effectively eliminate the abnormal noise caused by the slider 31 hitting the base, and improve the user's operating experience.

[0072] See appendix Figure 1 -Appendix Figure 6 The base 2 has a power storage unit (not shown) and / or a power connection unit (not shown) inside, and the body 1 has a control unit (not shown) inside; the bracket 22 has a wiring channel 220 inside, and the rotating block 32 has a hollow wiring hole 320 inside; the power storage unit and / or power connection unit are wired through the wiring channel 220 and the wiring hole 320 to electrically connect to the control unit.

[0073] Specifically, the energy storage unit generally refers to a battery, the power connection unit generally refers to a circuit board used to connect to an external power supply, and the control unit refers to optical and circuit components used to generate specific light to the lens 12. The technology of charging the control unit through the energy storage unit or the power connection unit, or charging the battery through the power connection unit, is relatively common in the field and belongs to the prior art. Therefore, the circuit structure and working principle of this utility model will not be described in detail.

[0074] It should also be noted that, although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application.

Claims

1. A multi-angle projector with lens protection function, characterized in that, The utility model provides a camera lens adjusting device, which comprises a body (1) provided with a protruding part (11) for mounting a lens (12); a base (2) provided at the top with a surrounding cavity (21) opening upward and corresponding to the protruding part (11), and further provided with a support (22); an adjusting member (3) comprising a sliding block (31) and a rotating block (32), the rotating block (32) being fixedly connected to the sliding block (31) and being dampedly hinged to the body (1) so that the body (1) can rotate around the axis of the rotating block (32); the sliding block (31) being slidably mounted on the support (22) so that the body (1) can move up and down along the vertical direction; wherein moving the body (1) downward along the vertical direction can drive the protruding part (11) to be inserted into the surrounding cavity (21); moving the body (1) upward along the vertical direction can drive the protruding part (11) to be separated from the surrounding cavity (21) and expose the lens (12); and rotating the body (1) around the rotating block (32) can adjust the projection angle of the lens (12). The surrounding cavity (21) is concave, and the edge of the surrounding cavity (21) is inwardly chamfered; the protruding part (11) is convex, and the edge of the protruding part (11) is outwardly chamfered, so that the protruding part (11) can be closely inserted into the surrounding cavity (21). The protruding part (11) is provided with a mounting hole (110) in the middle, and the lens (12) is fixedly arranged in the mounting hole (110). The support (22) is internally provided with a sliding seat (23), the sliding seat (23) is provided with a vertical sliding groove (231), the side wall of the sliding groove (231) is provided with a movable slot (232) penetrating through the support (22) to the outside; the sliding block (31) is slidably connected with the sliding groove (231), and the rotating block (32) is located in the movable slot (232) and can move along the movable slot (232) as the sliding block (31) moves. The utility model further comprises a pop-up structure (4) comprising an elastic member (41) and a locking member (42), and the support (22) is internally provided with a resisting block (24); the elastic member (41) is arranged in the support (22) and abuts against the sliding block (31) and the resisting block (24), and the elastic member (41) is deformed and stores energy when the protruding part (11) is inserted into the surrounding cavity (21); the locking member (42) is mounted on the support (22) and can lock or release the sliding block (31).

2. The multi-angle projector with lens protection function according to claim 1, characterized in that, The elastic member (41) is a spring, the resisting block (24) is internally provided with a plug hole (240), the sliding block (31) is provided with a plug column (310), one end of the spring is arranged in the plug hole (240), and the other end of the spring is sleeved with the plug column (310).

3. The multi-angle projector with lens protection function according to claim 2, characterized in that, ​ 4. The multi-angle projector with lens protection function according to claim 1, characterized in that, ​ 5. The multi-angle projector with lens protection function according to claim 4, characterized in that, ​ 6. The multi-angle projector with lens protection function according to claim 5, characterized in that, ​ 7. The multi-angle projector with lens protection function according to claim 5, characterized in that, The locking piece (42) comprises a swing lever (421), a coil spring (422) and a button (423), the bracket (22) is provided with a key groove (25), and the sliding block (31) is provided with a bayonet (31k); the swing lever (421) is rotatably installed in the bracket (22) and located beside the sliding seat (23), and a first end of the swing lever (421) is provided with a hook (421k) corresponding to the bayonet (31k); the coil spring (422) is installed at the connection between the swing lever (421) and the bracket (22), so that the swing lever (421) has an inner swing tendency; the button (423) is movably installed at the key groove (25) and corresponds to a second end of the swing lever (421), and pressing the button (423) can drive the swing lever (421) to swing outward and drive the coil spring (422) to deform and store energy. Wherein, when the elastic piece (41) deforms and stores energy, the hook (421k) is connected with the bayonet (31k) to lock the sliding block (31); when the button (423) is pressed, the hook (421k) is separated from the bayonet (31k) to release the sliding block (31), and the elastic piece (41) releases energy and recovers to drive the sliding block (31) to move upward.

8. The multi-angle projector with lens protection function according to claim 7, characterized in that, The bayonet (31k) is arranged in a straight line array on the sliding block (31), and the hook (421k) can be connected or separated from any bayonet (31k) one by one.

9. The multi-angle projector with lens protection function according to claim 5, characterized in that, The inner wall of the sliding groove (231) is provided with a mute pad (26), and the inner wall of the sliding block (31) is attached to the mute pad (26).

10. The multi-angle projector with lens protection function according to any one of claims 1-9, characterized in that, The inside of the base (2) is provided with a power storage unit and / or a power connection unit, and the inside of the machine body (1) is provided with a control unit; the inside of the bracket (22) is provided with a wiring channel (220), and the inside of the rotating block (32) is provided with a hollow wiring hole (320); the power storage unit and / or the power connection unit are wired through the wiring channel (220) and the wiring hole (320) to electrically connect the control unit.

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