Anti-collision projector

Abstract

The invention relates to the technical field of projectors, and discloses an anti-collision projector which comprises a ceiling piece, a containing cavity is formed in the ceiling piece, a lifting assembly is arranged in the containing cavity and used for driving a projector body to ascend and descend, and the lifting assembly is composed of a lifting bottom plate, a lifting top plate and a fixed connecting rod. A plurality of fixing connecting rods used for connection are arranged between the lifting bottom plate and the lifting top plate, and a projector body is fixedly installed on the lifting bottom plate. Through the arrangement of the lifting assembly, the projector body cannot be exposed to the outside all the time, the situation that the projector is damaged due to accidental collision of a user is avoided, the protection plate can synchronously complete corresponding movement when the projector body resets and moves upwards, and then the front end of the projector body is effectively protected.

Description

Technical Field

[0001] The present invention relates to the technical field of projectors, and particularly to an anti-collision projector. Background Art

[0002] A projector, also known as a projection machine, is a device that can project images or videos onto a screen and can be connected to a computer, VCD, DVD, BD, game console, DV, etc. through different interfaces to play corresponding video signals.

[0003] Existing projectors are generally installed naked on the ceiling. Although this setting does not affect the normal use of the projector, in the directly naked installation method, if the user accidentally collides with the projector, it may cause damage to the projector, thus reducing the service life of the projector.

[0004] Therefore, it does not meet the existing requirements, and for this reason, we propose an anti-collision projector. Summary of the Invention

[0005] The present invention provides an anti-collision projector. Through the setting of the lifting assembly, not only can the projector be lowered only when in use and stored inside the ceiling when not in use, but also when the projector body moves upward for resetting, the protection plate can complete the corresponding movement synchronously, thereby effectively protecting the front end of the projector body, and solving the problem that in the prior art mentioned in the above background art, the projector body is always exposed to the outside, and if the user collides with the projector, it will cause damage to the projector.

[0006] The present invention provides the following technical solution: an anti-collision projector, including a ceiling member, an accommodation cavity is opened inside the ceiling member, a lifting assembly is arranged inside the accommodation cavity, the lifting assembly is used to drive the projector body to lift, the lifting assembly is composed of a lifting bottom plate, a lifting top plate and fixed connecting rods, several fixed connecting rods for connection are arranged between the lifting bottom plate and the lifting top plate, and the projector body is fixedly installed on the lifting bottom plate;

[0007] A second moving chute is further opened on the lifting bottom plate, a protection plate is further arranged on the lifting bottom plate, the protection plate is used to protect the front end of the projector body, and a protection sleeve is further installed on the protection plate, and the protection sleeve is used to protect the lens of the projector body.

[0008] As an optional solution of the anti-collision projector described in the present invention, wherein: a first moving chute is opened at the inner wall of the accommodation cavity, the first moving chute is composed of a moving straight groove and a moving inclined groove, the moving straight groove and the moving inclined groove are communicated, and a limiting inclined surface is arranged inside the moving straight groove.

[0009] As an alternative solution for the anti-collision projector of the present invention, the following is provided: a protective airbag is installed on the inner wall of the protective sleeve, a first sliding groove is formed on the surface of the protective sleeve, a third sliding groove is formed on the inner wall of the first sliding groove, a connecting head is installed inside the first sliding groove, the connecting head is slidably arranged inside the third sliding groove, and a first air pipe for communication is further installed between the connecting head and the protective airbag.

[0010] As an alternative solution for the anti-collision projector of the present invention, the following is provided: a first connecting plate is installed at the rear end of the protective sleeve, a second sliding groove is formed on the protective plate, the first connecting plate is slidably arranged inside the second sliding groove, a first spring for connection is further installed between the second sliding groove and the first connecting plate, and the second sliding groove is communicated with the protective airbag.

[0011] As an alternative solution for the anti-collision projector of the present invention, the following is provided: a third moving slide bar is installed at the bottom of the protective plate, the third moving slide bar is slidably arranged inside the second moving sliding groove through a ball, the second moving sliding groove is composed of a moving horizontal groove and a moving vertical groove, the moving horizontal groove and the moving vertical groove are communicated, and a corrugated airbag is further installed inside the moving vertical groove.

[0012] As an alternative solution for the anti-collision projector of the present invention, the following is provided: one end of the corrugated airbag is installed with a second pressing plate, an extrusion rod is further installed on the second pressing plate, and a communication groove for the movement of the extrusion rod is formed inside the corrugated airbag.

[0013] As an alternative solution for the anti-collision projector of the present invention, the following is provided: a third moving sliding groove is formed on the bottom surface of the lifting top plate, the third moving sliding groove is symmetrically arranged with the second moving sliding groove formed on the lifting bottom plate, one end of a moving connecting rod is installed on the protective plate, a fixed connection is formed between the other end of the moving connecting rod and the first moving slide bar, the first moving slide bar is slidably arranged inside the first moving sliding groove through a ball, a fixed connection is formed between the top end of the moving connecting rod and the second moving slide bar, and the second moving slide bar is slidably arranged inside the third moving sliding groove through a ball.

[0014] As an alternative solution for the anti-collision projector of the present invention, the following is provided: a communication hole is formed on the top of the lifting bottom plate, a fourth sliding groove is formed inside the lifting bottom plate, the communication hole is communicated with the fourth sliding groove, a second air pipe for communication is arranged between the fourth sliding groove and the corrugated airbag, a first pressing plate and a second connecting plate are respectively slidably arranged inside the fourth sliding groove, and a second spring is installed between the first pressing plate and the second connecting plate.

[0015] As an alternative solution for the anti-collision projector described in the present invention, wherein: a plugging plate is slidably arranged inside the communication hole, one end of a connecting slide bar is installed on the bottom surface of the plugging plate, the other end of the connecting slide bar is slidably arranged inside the lifting bottom plate, a fourth spring is further arranged between the other end of the connecting slide bar and the lifting bottom plate, and a first extrusion block is also installed on the connecting slide bar.

[0016] As an alternative solution for the anti-collision projector described in the present invention, wherein: a second extrusion block is further slidably arranged inside the lifting bottom plate, the second extrusion block is connected with a third connecting plate through a connecting rod, and a third spring is installed between the third connecting plate and the lifting bottom plate.

[0017] The present invention has the following beneficial effects:

[0018] 1. For this anti-collision projector, through the setting of the lifting component, not only can the projector body not be constantly exposed to the outside, so as to avoid the situation that the projector is damaged due to accidental collision by the user, but also when the projector body moves upward for reset, the protection plate can complete the corresponding movement synchronously, thereby effectively protecting the front end of the projector body. Moreover, when the projector body moves downward, the protection plate can also move in the opposite direction synchronously to release the front-end protection of the projector body, so that the projector body can smoothly perform the corresponding projection playback.

[0019] 2. For this anti-collision projector, through the setting of the protection sleeve, after the protection plate completes the protection of the front end of the projector body, by moving the protection plate again, the protection sleeve arranged on the protection plate can complete the socket protection of the front-end lens of the projector body. And after the protection sleeve is socketed, by supplying air to the protection airbag arranged inside the protection sleeve, the protection airbag can expand, thereby better protecting the front-end lens of the projector body. And while the protection airbag expands, the protection sleeve will also rotate at a certain angle, so that the protection airbag rotates during the expansion process, thereby cleaning the impurities adhering to the lens surface to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic side view structure diagram of the whole of the present invention.

[0021] Figure 2 It is a schematic bottom view structure diagram of the whole of the present invention.

[0022] Figure 3 It is a schematic structure diagram of the lifting component of the present invention.

[0023] Figure 4 It is a schematic structure diagram of the top surface of the lifting bottom plate of the present invention.

[0024] Figure 5 Schematic diagram of the bottom surface structure of the lifting top plate of the present invention.

[0025] Figure 6 Schematic diagram of the protective plate, moving connecting rod and protective sleeve structure of the present invention.

[0026] Figure 7 Schematic diagram of the protective plate structure of the present invention.

[0027] Figure 8 Schematic diagram of the sectional structure of the partial protective sleeve of the present invention.

[0028] Figure 9 Schematic diagram of the first sectional structure of the partial ceiling member of the present invention.

[0029] Figure 10 Schematic diagram of the second sectional structure of the partial ceiling member of the present invention.

[0030] Figure 11 Schematic diagram of the first sectional structure of the partial lifting bottom plate of the present invention.

[0031] Figure 12 Schematic diagram of the second sectional structure of the partial lifting bottom plate of the present invention.

[0032] Figure 13 For the present invention Figure 12 Enlarged structure schematic diagram at position A.

[0033] Figure 14 Schematic diagram of the internal structure of the communication hole of the present invention.

[0034] In the figure: 1. Ceiling member; 2. Lifting assembly;

[0035] 101. Accommodation cavity; 102. First moving chute; 1021. Moving straight groove; 1022. Moving inclined groove; 1023. Limiting inclined surface; 103. Projector body;

[0036] 201, lifting bottom plate; 202, lifting top plate; 203, fixed connecting rod; 204, protective plate; 205, second moving chute; 2051, moving horizontal chute; 2052, moving vertical chute; 206, moving connecting rod; 207, first moving slide bar; 208, protective sleeve; 209, protective airbag; 210, connecting head; 211, communicating hole; 213, third moving chute; 214, second moving slide bar; 215, third moving slide bar; 216, first chute; 217, second chute; 218, first spring; 219, first connecting plate; 220, third chute; 221, first air pipe; 222, corrugated airbag; 223, fourth chute; 224, second air pipe; 225, first pressing plate; 226, second spring; 227, second connecting plate; 229, second pressing plate; 230, pressing rod; 231, communicating groove; 232, blocking plate; 233, connecting slide bar; 234, first pressing block; 235, second pressing block; 236, third connecting plate; 237, third spring; 238, fourth spring. Detailed implementation manners

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] Embodiment 1, please refer to Figures 1 - 14 , an anti-collision projector, including a ceiling-mounted member 1. An accommodation cavity 101 is provided inside the ceiling-mounted member 1. A lifting assembly 2 is arranged inside the accommodation cavity 101. The lifting assembly 2 is used to drive the projector body 103 to lift. The lifting assembly 2 is composed of a lifting bottom plate 201, a lifting top plate 202 and a fixed connecting rod 203. A number of fixed connecting rods 203 for connection are arranged between the lifting bottom plate 201 and the lifting top plate 202. The projector body 103 is fixedly installed on the lifting bottom plate 201. At the same time, since the top surface of the lifting top plate 202 is fixedly connected to the output end of the embedded cylinder, and the embedded cylinder is installed inside the ceiling-mounted member 1, when the user needs to project, the user only needs to start the embedded cylinder, and the lifting top plate 202 will move inside the accommodation cavity 101 and drive the projector body 103 fixedly installed on the lifting bottom plate 201 to move synchronously downward. When the lifting top plate 202 moves to the maximum displacement, the projector body 103 also moves to the best viewing point at this time, and then the user can perform the corresponding projection playback.

[0039] Since a protective plate 204 is further provided on the lifting bottom plate 201, and a third moving slide bar 215 is installed at the bottom of the protective plate 204, the third moving slide bar 215 is slidably arranged inside the second moving chute 205 through balls. Refer to Figure 4 It can be seen that the second moving chute 205 is composed of a moving horizontal chute 2051 and a moving vertical chute 2052. The moving horizontal chute 2051 and the moving vertical chute 2052 are communicated with each other. And after the lifting top plate 202 moves down completely, the third moving slide bar 215 connected to the protective plate 204 is at one end of the moving horizontal chute 2051 far from the moving vertical chute 2052, while the position where the lens of the projector body 103 is located is on the same horizontal line as the moving vertical chute 2052. Therefore, the protective plate 204 at this time will not affect the projection of the projector body 103.

[0040] Refer to Figure 9 It can be seen that a first moving chute 102 is opened at the inner wall of the accommodating cavity 101, and one end of a moving connecting rod 206 is further installed on the protective plate 204. A fixed connection is formed between the other end of the moving connecting rod 206 and the first moving slide bar 207. And the first moving slide bar 207 is slidably arranged inside the first moving chute 102 through balls. At the same time, refer to Figure 9 It can be seen that the first moving chute 102 is composed of a moving straight chute 1021 and a moving inclined chute 1022. The moving straight chute 1021 and the moving inclined chute 1022 are communicated with each other. And after the lifting top plate 202 moves down completely, the first moving slide bar 207 is located at one end of the moving inclined chute 1022 far from the moving straight chute 1021 at this time. Therefore, after the projection is completed, the user only needs to control the embedded cylinder to drive the lifting top plate 202 to move up, and then drive the projector body 103 arranged on the lifting bottom plate 201 to complete the reset. At this time, the first moving slide bar 207 will gradually slide from the moving inclined chute 1022 towards the direction of the moving straight chute 1021. Since the moving inclined chute 1022 is inclined, after the first moving slide bar 207 slides inside the moving inclined chute 1022, the moving connecting rod 206 connected to the first moving slide bar 207 will drive the protective plate 204 to Figure 4 move rightward in this direction. At this time, the third moving slide bar 215 will also gradually slide from the moving horizontal chute 2051 towards the direction of the moving vertical chute 2052, and the second moving slide bar 214 arranged above the moving connecting rod 206 will also slide inside the third moving chute 213 opened on the lifting top plate 202. Through this setting, the stability of the protective plate 204 during movement can be guaranteed to a certain extent.

[0041] It should be noted that the third moving chute 213 and the second moving chute 205 are horizontally symmetrically arranged, and Figure 5 the lifting top plate 202 in

[0042] When the first movable slide bar 207 moves to the intersection of the movable straight groove 1021 and the movable inclined groove 1022, the third movable slide bar 215 also moves to the intersection of the movable horizontal groove 2051 and the movable vertical groove 2052. At this time, the protective plate 204 will also be moved again to the front of the lens of the projector body 103 driven by the first movable slide bar 207 and the third movable slide bar 215. Since the width of the protective plate 204 is relatively large and the upward movement of the lifting base plate 201 is still in progress, before the protective plate 204 moves to the above position, the plate surface of the protective plate 204 has already completed the shielding of the lens of the projector body 103 in advance. In this way, it can be avoided to a certain extent that objects will collide with the front end of the projector body 103 during the resetting and upward movement of the projector body 103, thereby causing damage to the front end of the projector body 103 and the lens set at the front end.

[0043] Similarly, when the projector body 103 moves downward, the first movable slide bar 207 and the third movable slide bar 215 will move opposite to the above movement inside the first movable slide groove 102 and the second movable slide groove 205, so as to drive the protective plate 204 to move in the opposite direction, thereby releasing the protection of the front end of the projector body 103, so that the projector body 103 can complete the projection effect normally.

[0044] Through the above arrangement, the protective plate 204 can synchronously complete the corresponding movement when the projector body 103 is reset and moved upward, thereby effectively protecting the front end of the projector body 103. Moreover, when the projector body 103 is moved downward, the protective plate 204 can also synchronously perform the opposite movement effect, so as to release the front end protection of the projector body 103, so that the projector body 103 can smoothly perform the corresponding projection playback.

[0045] Embodiment 2: This embodiment is intended to promote the solution of the problem that the protection effect of the projector body 103 lens cannot be completely and effectively achieved by moving the protective plate 204 alone, and a certain amount of dust will adhere to the surface of the projector body 103 lens after being used for a period of time. This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figures 1 - 14 , see Figure 10 It can be seen that the movable straight groove 1021 is provided with a limited inclined surface 1023, so when the first movable slide bar 207 continues to move upward in the movable straight groove 1021, the first movable slide bar 207 will be moved upward in the process of moving upward. Figure 10 That is to say, the protective plate 204 will move closer to the projector body 103 at this time, and the third movable slide bar 215 connected to the protective plate 204 will also slide inside the movable vertical slot 2052.

[0046] Refer to Figure 11 and Figure 12 As can be seen, a corrugated airbag 222 is installed inside the moving vertical groove 2052, and a second pressing plate 229 is installed at one end of the corrugated airbag 222. Therefore, when the third moving slide bar 215 moves inside the moving vertical groove 2052, the third moving slide bar 215 will press the second pressing plate 229, thereby driving the second pressing plate 229 to complete the pressing of the corrugated airbag 222.

[0047] Since one end of a second air pipe 224 is also connected to the corrugated airbag 222, and the other end of the second air pipe 224 is connected inside the fourth sliding groove 223, when the corrugated airbag 222 is pressed, the gas inside the corrugated airbag 222 will be transported from the second air pipe 224 to the inside of the fourth sliding groove 223.

[0048] Since a first pressing plate 225 and a second connecting plate 227 are respectively slidably arranged inside the fourth sliding groove 223, a second spring 226 is installed between the first pressing plate 225 and the second connecting plate 227. And it should be noted that the gas transported from the second air pipe 224 to the inside of the fourth sliding groove 223 is exactly transported to the side of the first pressing plate 225 away from the second connecting plate 227. And it should be noted that a fixed connection is also formed between the end of the second connecting plate 227 away from the first pressing plate 225 and the output end of the embedded air cylinder. The embedded air cylinder is installed inside the lifting bottom plate 201. Therefore, through this setting, the second connecting plate 227 is equivalent to being temporarily fixed inside the fourth sliding groove 223. And since the second connecting plate 227 is softly connected to the first pressing plate 225 through the second spring 226, when the gas is transported to the side of the first pressing plate 225 away from the second connecting plate 227, the inside of the fourth sliding groove 223 will gradually be filled with gas. And when the inside of the fourth sliding groove 223 is filled with sufficient gas, the gas inside the fourth sliding groove 223 will also press the first pressing plate 225, thereby causing the first pressing plate 225 to move closer to the second connecting plate 227.

[0049] Through the above setting, when the subsequent fourth sliding groove 223 is communicated with the outside, at this time, the first pressing plate 225 will also be relieved of the corresponding pressing due to the gas being discharged from the fourth sliding groove 223. At this time, through the restoring elastic force of the second spring 226, the first pressing plate 225 can quickly complete the reset. And the process of the first pressing plate 225 resetting can also accelerate the discharge of the gas inside the fourth sliding groove 223, so as to improve the discharge efficiency of the gas to a certain extent.

[0050] Refer to Figure 6It can be seen that a protective sleeve 208 is also installed on the protective plate 204. Therefore, when the protective plate 204 moves closer to the projector body 103, the protective sleeve 208 will also move closer to the projector body 103 synchronously. And when the protective plate 204 moves to the maximum displacement, at this time the protective sleeve 208 will be sleeved on the lens provided at the front end of the projector body 103 to provide a certain degree of protection for the lens.

[0051] At the same time, since a connector 210 is also installed on the protective sleeve 208, and a communication hole 211 is also provided on the lifting bottom plate 201, referring to Figure 14 it can be seen that a connection through groove is provided inside the communication hole 211, and the other end of the connection through groove is communicated with the inside of the fourth chute 223. However, referring to Figure 12 and Figure 13 it can be seen that a plugging plate 232 is slidably arranged inside the communication hole 211, and the plugging plate 232 forms a soft connection with the lifting bottom plate 201 through a fourth spring 238. This enables the plugging plate 232 to block the connection through groove in the initial state under the elastic force of the fourth spring 238. This setting is to prevent the gas compressed inside the fourth chute 223 from flowing out in advance before the connector 210 is communicated with the communication hole 211, so as to affect the air supply effect inside the protective sleeve 208.

[0052] Since an extrusion rod 230 is also installed on the second extrusion plate 229, and a communication groove 231 for the movement of the extrusion rod 230 is provided inside the corrugated airbag 222, when the protective plate 204 moves closer to the projector body 103, the second extrusion plate 229 will also drive the extrusion rod 230 to move inside the communication groove 231. And since a second extrusion block 235 is slidably arranged inside the lifting bottom plate 201, the second extrusion block 235 is connected to a third connecting plate 236 through a connecting rod, and a third spring 237 is installed between the third connecting plate 236 and the lifting bottom plate 201. Therefore, before the protective plate 204 moves to the maximum displacement, the extrusion rod 230 will come into contact with the third connecting plate 236 in advance, and then drive the second extrusion block 235 to make Figure 13 the rightward movement in

[0053] Since a first extrusion block 234 is also installed on the connection sliding rod 233 connected to the plugging plate 232, when the second extrusion block 235 makes Figure 13When moving to the right in [the above situation], the second pressing block 235 will gradually come into contact with the first pressing block 234, and then press the first pressing block 234, so as to drive the connecting slide rod 233 fixedly connected to the first pressing block 234 to move downward correspondingly. When the connecting slide rod 233 moves downward, the sealing plate 232 connected to the connecting slide rod 233 will also move downward synchronously, so as to release the sealing of the communication hole 211 and the fourth chute 223, and at this time, the connector 210 just completes the docking of the communication holes 211.

[0054] After the connector 210 is docked with the communication hole 211, at this time, since the connecting through groove has also been completed, the gas that should have been compressed by the first pressing plate 225 will first enter the interior of the communication hole 211 and then enter the connector 210. It should be noted that the inner diameter of the connector 210 is relatively large compared to the opening diameter of the communication hole 211. This makes it so that when the connector 210 moves to the position of the communication hole 211, the connector 210 will entirely wrap the communication hole 211, which means that even if the position of the connector 210 moves offset, the gas discharged from the communication hole 211 can still smoothly enter the interior of the connector 210.

[0055] Refer to Figure 6 As can be seen, a protective airbag 209 is installed on the inner wall of the protective sleeve 208, and a connection is formed between the connector 210 and the protective airbag 209 through the first air pipe 221. This makes the gas entering the interior of the connector 210 gradually fill the interior of the protective airbag 209 through the first air pipe 221. Since the protective sleeve 208 has completed the docking with the front lens of the projector body 103 at this time, as the gas in the protective airbag 209 gradually fills up, the protective airbag 209 will eventually come into close contact with the lens provided at the front end of the projector body 103. And through this method, it is also possible to better protect the front lens of the projector body 103.

[0056] Refer to Figure 8 and Figure 9It can be seen that a first connecting plate 219 is installed at the rear end of the protective sleeve 208. A second sliding groove 217 is formed on the protective plate 204. The first connecting plate 219 is slidably arranged inside the second sliding groove 217. A first spring 218 for connection is also installed between the second sliding groove 217 and the first connecting plate 219. It should be noted that the second sliding groove 217 is communicated with the protective airbag 209, and the connection position between the two is exactly the position where the first spring 218 is arranged. Therefore, when the protective airbag 209 is gradually filled with gas and a part of the inflation is completed, a part of the gas entering the protective airbag 209 will enter the second sliding groove 217. When the second sliding groove 217 is filled with a certain amount of gas, the gas will squeeze the first connecting plate 219, thereby driving the protective sleeve 208 to rotate inside the second sliding groove 217. Since the inflation of the protective airbag 209 precedes the rotation of the protective sleeve 208, after the protective sleeve 208 rotates, the protective airbag 209 has also inflated to a certain extent. And it should be noted that a layer of soft bristles is provided on the inner wall of the protective airbag 209. Therefore, with the rotation of the protective sleeve 208, the already inflated protective airbag 209 will complete the rotational cleaning of the front-end lens of the projector body 103 under the rotation of the protective sleeve 208, so as to clean the dust adhering to the lens to a certain extent.

[0057] It should be noted that the rear surface of the protective sleeve 208 is in a close fit with the protective plate 204. This fit ensures that even if the protective sleeve 208 rotates, the gas entering the second sliding groove 217 will not leak, so as not to affect the rotation of the protective sleeve 208.

[0058] It should be noted that a first sliding groove 216 is formed on the surface of the protective sleeve 208, and a third sliding groove 220 is formed on the inner wall of the first sliding groove 216. The connecting head 210 is slidably arranged inside the third sliding groove 220. Therefore, even if the protective sleeve 208 rotates, the connecting head 210 will not move. This setting is to prevent the docking between the connecting head 210 and the communication hole 211 from being affected after the protective sleeve 208 rotates, thereby affecting the air supply effect to the protective airbag 209. And it should be noted that while ensuring the inflation of the protective airbag 209, the gas supplied to the second sliding groove 217 can only drive the protective sleeve 208 to rotate 180 degrees. This setting is also to avoid excessive torsion of the first air pipe 221 if the rotation angle of the protective sleeve 208 is too large, so as not to affect the air supply effect to the protective airbag 209. At the same time, refer to Figure 6It can be seen that a connecting piece for fixing is also connected between the connecting head 210 and the protective plate 204, which enables the connecting head 210 to maintain a stable state no matter how the protective sleeve 208 rotates. This setting is also to prevent the connecting head 210 from swinging left and right due to the rotation of the protective sleeve 208 when the protective sleeve 208 rotates, so as to affect the connection and air supply between the connecting head 210 and the communication hole 211.

[0059] Before the lifting top plate 202 descends again, at this time, the user needs to start the built-in cylinder that forms a connection with the second connecting plate 227. By resetting the output end of the built-in cylinder, the second connecting plate 227 is driven to move Figure 11 to the left as shown in the figure. When the second connecting plate 227 moves to the left, the first pressing plate 225 connected to the second connecting plate 227 through the second spring 226 will also move to the left accordingly. After the first pressing plate 225 moves to the left, the space on the right side of the first pressing plate 225 will be under a certain degree of negative pressure, and then the gas transported into the connecting head 210 will gradually be recovered into the fourth chute 223. That is to say, the gas inside the protective airbag 209 will gradually decrease. Therefore, the protective airbag 209 will gradually separate from the front lens of the projector body 103. This setting is also to prevent the protective airbag 209 from being too tightly in contact with the lens when the lifting top plate 202 moves, thereby causing unnecessary damage to the lens. When the lifting top plate 202 moves downward, the first moving slide bar 207 will gradually enter the moving inclined slot 1022 from the moving straight slot 1021. At this time, the third moving slide bar 215 connected to the protective plate 204 will move in the opposite direction to the above, so as to gradually release the protection of the lens by the protective sleeve 208. During this process, the user can control the built-in cylinder to reset the second connecting plate 227 to its original position again, so that when the lifting top plate 202 resets and moves upward later, the first pressing plate 225 can still complete the above-mentioned moving effect. When the first moving slide bar 207 moves to the intersection of the moving straight slot 1021 and the moving inclined slot 1022, at this time, the third moving slide bar 215 will also move to the intersection of the moving horizontal slot 2051 and the moving vertical slot 2052. That is to say, the pressing rod 230 connected to the second pressing plate 229 has also released the pressing on the third connecting plate 236, so that the blocking plate 232 completes the corresponding reset, and then the blocking plate 232 blocks the communication between the communication hole 211 and the fourth chute 223 again, so that when the lifting top plate 202 resets and moves upward later, the above-mentioned movement can still be carried out, and then the protective sleeve 208 can complete the protection effect on the front lens of the projector body 103 again.

[0060] It should be noted that when the protective plate 204 moves to the outermost edge of the moving horizontal groove 2051 due to the downward movement of the lifting top plate 202, a corresponding cleaning and adsorption component can also be set at the position corresponding to this place by the user. The cleaning and adsorption component can be a common cleaning and adsorption device in the prior art, and will not be elaborated here. The setting of the cleaning and adsorption component is to enable the protective plate 204 to complete the adsorption and cleaning of the soft bristles on the inner wall of the protective airbag 209 when it moves to this place, so that when the protective sleeve 208 cleans the front lens of the projector body 103 again, the dust and impurities adhered to the soft bristles have been cleaned. This setting is also to avoid the situation where the soft bristles adhered with dust and impurities not only cannot complete the cleaning of the lens, but also cause secondary pollution.

[0061] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0062] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. An anti-collision projector, comprising a ceiling-mounted member (1), characterized in that: The ceiling member (1) is internally provided with a receiving cavity (101). An elevating assembly (2) is arranged inside the receiving cavity (101), and the elevating assembly (2) is used to drive the projector body (103) to move up and down. The elevating assembly (2) is composed of an elevating bottom plate (201), an elevating top plate (202), and fixed connecting rods (203). A number of fixed connecting rods (203) for connection are arranged between the elevating bottom plate (201) and the elevating top plate (202). The projector body (103) is fixedly installed on the elevating bottom plate (201). A second moving chute (205) is further opened on the elevating bottom plate (201). A protective plate (204) is further arranged on the elevating bottom plate (201). The protective plate (204) is used to protect the front end of the projector body (103). A protective sleeve (208) is further installed on the protective plate (204), and the protective sleeve (208) is used to protect the lens of the projector body (103).

2. The anti-collision projector according to claim 1, characterized in that: A first moving chute (102) is opened at the inner wall of the receiving cavity (101). The first moving chute (102) is composed of a moving straight groove (1021) and a moving inclined groove (1022). The moving straight groove (1021) and the moving inclined groove (1022) are connected. A limiting inclined surface (1023) is arranged inside the moving straight groove (1021).

3. The anti-collision projector according to claim 1, characterized in that: A protective airbag (209) is installed at the inner wall of the protective sleeve (208). A first chute (216) is opened on the surface of the protective sleeve (208). A third chute (220) is opened on the inner wall of the first chute (216). A connecting head (210) is installed inside the first chute (216). The connecting head (210) is slidably arranged inside the third chute (220). A first air pipe (221) for connection is further installed between the connecting head (210) and the protective airbag (209).

4. The anti-collision projector according to claim 3, wherein: A first connecting plate (219) is installed at the rear end of the protective sleeve (208). A second chute (217) is opened on the protective plate (204). The first connecting plate (219) is slidably arranged inside the second chute (217). A first spring (218) for connection is further installed between the second chute (217) and the first connecting plate (219). The second chute (217) is communicated with the protective airbag (209).

5. The anti-collision projector according to claim 1, characterized in that: A third moving slide bar (215) is installed at the bottom of the protective plate (204). The third moving slide bar (215) is slidably arranged inside the second moving chute (205) through a ball. The second moving chute (205) is composed of a moving horizontal groove (2051) and a moving vertical groove (2052). The moving horizontal groove (2051) and the moving vertical groove (2052) are connected. A corrugated airbag (222) is further installed inside the moving vertical groove (2052).

6. The anti-collision projector according to claim 5, wherein: One end of the corrugated airbag (222) is provided with a second extrusion plate (229). An extrusion rod (230) is also installed on the second extrusion plate (229). A communication groove (231) for the movement of the extrusion rod (230) is also formed inside the corrugated airbag (222).

7. The anti-collision projector according to claim 1, characterized in that: A third moving chute (213) is formed on the bottom surface of the lifting top plate (202). The third moving chute (213) and the second moving chute (205) formed on the lifting bottom plate (201) are symmetrically arranged. One end of a moving connecting rod (206) is installed on the protection plate (204). A fixed connection is formed between the other end of the moving connecting rod (206) and a first moving slide bar (207). The first moving slide bar (207) is slidably arranged inside the first moving chute (102) through a ball. A fixed connection is formed between the top end of the moving connecting rod (206) and a second moving slide bar (214). The second moving slide bar (214) is slidably arranged inside the third moving chute (213) through a ball.

8. The anti-collision projector according to claim 1, wherein: A communication hole (211) is formed on the top of the lifting bottom plate (201). A fourth chute (223) is formed inside the lifting bottom plate (201). The communication hole (211) is communicated with the fourth chute (223). A second air pipe (224) for communication is arranged between the fourth chute (223) and the corrugated airbag (222). A first extrusion plate (225) and a second connecting plate (227) are respectively slidably arranged inside the fourth chute (223). A second spring (226) is installed between the first extrusion plate (225) and the second connecting plate (227).

9. The anti-collision projector according to claim 8, wherein: A plugging plate (232) is slidably arranged inside the communication hole (211). One end of a connecting slide bar (233) is installed on the bottom surface of the plugging plate (232). The other end of the connecting slide bar (233) is slidably arranged inside the lifting bottom plate (201). A fourth spring (238) is also arranged between the other end of the connecting slide bar (233) and the lifting bottom plate (201). A first extrusion block (234) is also installed on the connecting slide bar (233).

10. The anti-collision projector according to claim 9, characterized in that: A second extrusion block (235) is also slidably arranged inside the lifting bottom plate (201). The second extrusion block (235) is connected with a third connecting plate (236) through a connecting rod. A third spring (237) is installed between the third connecting plate (236) and the lifting bottom plate (201).

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