Device for protecting projector lens

Abstract

The utility model discloses a device for protecting a projector lens, and relates to the technical field of lens protection. The device comprises a sleeve shell, a driving groove is formed in the top of the sleeve shell, a protective cover is rotationally connected into the driving groove, a projection window is formed in one side of the sleeve shell, one end of the driving groove is embedded into the projection window, an inner groove is formed in the hinged shaft end of the protective cover, an inner insertion rod is inserted into the inner groove, and one end of the inner insertion rod is fixedly connected with a first bevel gear; a driving motor is fixedly connected into the driving groove, and the output end of the driving motor is fixedly connected with a second bevel gear engaged with the first bevel gear. When the projector is powered off, the driving motor is started to drive the inner insertion rod to be matched with the synchronous assembly to drive the protection cover to rotate around the hinge shaft, so that the protection cover rotates around the hinge shaft to cover the projection window, automatic protection of the projector lens is achieved, and the situation that the lens cover is forgotten to be closed due to negligence is effectively reduced. And potential risks and damages are caused to the projector lens.

Description

Technical Field

[0001] The present application relates to the technical field of lens protection, and in particular to a device for protecting a projector lens. Background Art

[0002] With the rapid development of science and technology, projectors have become important equipment in the fields of education, conferences, entertainment, etc., and their projection effects directly affect the user experience. However, during the use of projectors, the lens is easily affected by external dust, stains or physical damage, which may affect the projection effect and even cause damage to the equipment. Therefore, how to effectively protect the projector lens and improve the service life and projection effect of the projector has become an urgent problem to be solved in the industry.

[0003] Traditional methods of projector lens protection mainly rely on the use of a manual lens cover, which is manually placed on the lens when the projector is not in use to prevent the intrusion of dust and stains.

[0004] However, in actual use, the manual lens cover requires the user to manually open and close it before and after use. This operation method is not only cumbersome and inconvenient, but also easy to forget to close the lens cover due to negligence, thereby causing potential risks and damage to the projector lens. Utility Model Content

[0005] The purpose of this application is to provide a device for protecting a projector lens in order to solve the problem that the manual lens cover operation is cumbersome and inconvenient, and that it is easy to forget to close the lens cover due to negligence, thereby causing potential risks and damage to the projector lens.

[0006] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0007] A device for protecting a projector lens comprises a shell, a driving groove is provided on the top of the shell, a protective cover is rotatably connected inside the driving groove, a projection window is provided on one side of the shell, one end of the driving groove is embedded in the projection window, an inner groove is provided on the hinge shaft end of the protective cover, an inner rod is inserted in the inner groove, one end of the inner rod is fixedly connected to a bevel gear 1, a driving motor is fixedly connected to the inside of the driving groove, an output end of the driving motor is fixedly connected to a bevel gear 2 meshing with the bevel gear 1, and one end of the inner rod is equipped with a synchronization component for driving the protective cover to rotate synchronously around the hinge shaft.

[0008] By adopting the above technical solution, by setting the coordination of the synchronization component with the drive motor and bevel gear 2, when the power of the projector is turned off, the drive motor is started to drive the inner rod to cooperate with the synchronization component to drive the protective cover to rotate around the hinge axis, so that the protective cover rotates around the hinge axis to cover the projection window, thereby realizing automatic protection of the projector lens, thereby effectively reducing the potential risks and damages to the projector lens caused by negligence of forgetting to close the lens cover, and improving the safety of the device.

[0009] Furthermore, the synchronization component includes a synchronization slide groove symmetrically opened on the inner side of the inner groove, one end of the inner rod is symmetrically fixedly connected with a synchronization slider, and the synchronization slider is slidably connected inside the synchronization slide groove.

[0010] By adopting the above technical solution and arranging the synchronous slide groove and the synchronous slider for use in combination, it is convenient to guide the protective cover to rotate coaxially with the inner rod around the hinge shaft, thereby improving the practicability of the device.

[0011] Furthermore, an unlocking groove is provided at one end of the shell, and an unlocking slider is fixedly connected to one end of the inner rod, and the unlocking slider is slidably connected to the inside of the unlocking groove. A resistance spring is fixedly connected to one end of the unlocking slider, and the resistance spring is installed inside the unlocking groove. One end of the inner rod passes through the shell and is fixedly connected to an unlocking knob, and a fixing component for fixing the protective cover is installed at one end of the shell.

[0012] By adopting the above technical scheme, by setting the unlocking slider and the cooperation with the resistance spring, the fixing component and the synchronization component, it is convenient to drive the unlocking slider along the length direction of the unlocking groove by pulling the unlocking knob to squeeze the resistance spring to produce a contraction deformation, and drive the bevel gear one to disengage from the meshing with the bevel gear two, and then drive the protective cover to rotate and disengage from the covering of the projection window by turning the unlocking knob, so that when the driving motor cannot open the protective cover, the protective cover can be removed from the projection window by manually turning the unlocking knob, thereby effectively improving the scope of application of the device.

[0013] Furthermore, the fixing assembly includes an arched block fixedly connected to one side of the protective cover, a receiving slot is provided on the top of the housing, a fixed rod is slidably connected inside the receiving slot, and one end of the fixed rod is inserted into the interior of the arched block.

[0014] By adopting the above technical solution, by setting the coordinated use of the fixed rod and the arched block, it is convenient to manually turn the unlocking knob to drive the protective cover to detach from the covering of the projection window, and then push one end of the fixed rod through the storage slide groove and insert it into the arched block, so that a snap-fit ​​fixation is formed between the protective cover and the shell, thereby completing the fixation of the protective cover and effectively improving the practicability of the device.

[0015] Furthermore, an error-touch groove is provided on the outer side of the housing, a notch is provided at the bottom of the error-touch groove, and the unlocking knob is embedded in the error-touch groove.

[0016] By adopting the above technical solution, by setting the cooperation between the false touch groove and the notch, it is convenient to form protection for the unlocking knob when the unlocking knob is pulled into the false touch groove, thereby reducing the possibility of false touching of the unlocking knob. Then, the unlocking knob can be inserted into the false touch groove through the notch to press the unlocking knob, thereby improving the practicality of the device.

[0017] Furthermore, a flexible sealing strip is fixedly connected to the inner side of the protective cover.

[0018] By adopting the above technical solution, by setting up the coordinated use of the flexible sealing strip and the protective cover, a flexible contact is formed between the protective cover and the projector lens through the flexible sealing strip, thereby reducing the wear between the protective cover and the projector lens and extending the service life of the device.

[0019] Furthermore, a pair of flow openings are symmetrically opened at one end of the flexible sealing strip, and a pair of exhaust openings are symmetrically opened at the bottom of the protective cover.

[0020] By adopting the above technical solution, by setting the flow port and the exhaust port for coordinated use, when the protective cover is driven to cover one side of the projection window, the flow port and the exhaust port are utilized to allow air inside and outside the casing to circulate, thereby reducing the influence of water vapor generated in the enclosed space inside the casing on the projector.

[0021] Furthermore, a sponge block is fixedly connected to the interior of the exhaust port.

[0022] By adopting the above technical solution and arranging the sponge block and the exhaust port for use together, the sponge block can be used to absorb the water vapor inside the casing, while filtering the air passing through the exhaust port, thereby improving the practicability of the device.

[0023] In summary, the present application includes at least one of the following beneficial effects:

[0024] 1. By setting up the coordinated use of the synchronization component with the drive motor and the bevel gear 2, when the power of the projector is turned off, the drive motor is started to drive the inner rod to cooperate with the synchronization component to drive the protective cover to rotate around the hinge axis, so that the protective cover rotates around the hinge axis to cover the projection window, thereby realizing automatic protection of the projector lens, thereby effectively reducing the potential risks and damages to the projector lens caused by forgetting to close the lens cover due to negligence, and improving the safety of the device.

[0025] 2. By setting the unlocking slider in cooperation with the resistance spring, the fixing component and the synchronization component, it is convenient to pull the unlocking knob to drive the unlocking slider along the length direction of the unlocking groove to squeeze the resistance spring to produce a contraction deformation, and drive the bevel gear one to disengage from the meshing with the bevel gear two, and then drive the protective cover to rotate and disengage from the covering of the projection window by turning the unlocking knob, so that when the driving motor cannot open the protective cover, the protective cover can be manually turned to remove the covering of the projection window by the protective cover, thereby effectively improving the scope of application of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the device body in this application.

[0027] Figure 2 It is an exploded view of the internal structure of the drive slot in this application.

[0028] Figure 3 It is a schematic diagram of the three-dimensional structure of the protective cover in this application.

[0029] Figure 4 It is a schematic diagram of the open state of the protective cover in this application.

[0030] Description of reference numerals:

[0031] 1. Shell; 2. Drive slot; 3. Protective cover; 4. Projection window; 5. Inner slot; 6. Inner rod; 7. Bevel gear one; 8. Drive motor; 9. Bevel gear two; 10. Synchronous slide slot; 11. Synchronous slider; 12. Unlocking slot; 13. Unlocking slider; 14. Resistance spring; 15. Unlocking knob; 16. Arch block; 17. Storage slide slot; 18. Fixed rod; 19. Accidental touch groove; 20. Notch; 21. Flexible sealing strip; 22. Flow port; 23. Exhaust port; 24. Sponge block. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-4 This application is described in further detail.

[0033] An embodiment of the present application discloses a device for protecting a projector lens.

[0034] Reference Figure 1-Figure 3, a device for protecting a projector lens, comprising a casing 1, a driving slot 2 is provided at the top of the casing 1, a protective cover 3 is rotatably connected inside the driving slot 2, a projection window 4 is provided at one side of the casing 1, one end of the driving slot 2 is embedded in the projection window 4, an inner slot 5 is provided at the hinged shaft end of the protective cover 3, an inner rod 6 is inserted in the inner slot 5, one end of the inner rod 6 is fixedly connected to a bevel gear 7, a driving motor 8 is fixedly connected inside the driving slot 2, a bevel gear 9 meshing with the bevel gear 7 is fixedly connected at the output end of the driving motor 8, and a synchronization component for driving the protective cover 3 to rotate synchronously around the hinge axis is installed at one end of the inner rod 6;

[0035] The synchronization component includes a synchronization slot 10 symmetrically opened inside the inner groove 5 , and one end of the inner rod 6 is symmetrically fixedly connected with a synchronization slider 11 , which is slidably connected inside the synchronization slot 10 .

[0036] When in use, first, a sensor for detecting the power status is set inside the projector, and the sensor is electrically connected to the drive motor 8, so that when the sensor detects that the projector power is turned off, it transmits a signal to the drive motor 8, and starts the drive motor 8 to drive the bevel gear 2 9 to engage with the bevel gear 1 7, and at the same time, the bevel gear 2 9 drives the inner rod 6 to rotate, and the inner rod 6 drives the synchronous slider 11 to form a conflict with the inner wall of the synchronous slide groove 10, and pushes the protective cover 3 to rotate around the hinge axis, so that the protective cover 3 rotates around the hinge axis and is embedded in the projection window 4, and the projection window 4 is covered, thereby realizing automatic protection of the projector lens, thereby effectively reducing the potential risks and damages to the projector lens caused by negligence of forgetting to close the lens cover, and improving the safety of the device.

[0037] Reference Figure 2-Figure 4 An unlocking groove 12 is provided at one end of the casing 1, an unlocking slider 13 is fixedly connected to one end of the inner rod 6, the unlocking slider 13 is slidably connected inside the unlocking groove 12, and a resisting spring 14 is fixedly connected to one end of the unlocking slider 13, and the resisting spring 14 is installed inside the unlocking groove 12. One end of the inner rod 6 passes through the casing 1 and is fixedly connected to an unlocking knob 15. A fixing component for fixing the protective cover 3 is installed at one end of the casing 1;

[0038] The fixing assembly includes an arch block 16 fixedly connected to one side of the protective cover 3, a receiving slot 17 is provided on the top of the housing 1, a fixed rod 18 is slidably connected inside the receiving slot 17, and one end of the fixed rod 18 is inserted into the arch block 16;

[0039] Moreover, an error-touch groove 19 is formed on the outer side of the casing 1 , a notch 20 is formed at the bottom of the error-touch groove 19 , and the unlocking knob 15 is embedded in the error-touch groove 19 .

[0040] When in use, when the drive motor 8 fails to start due to a problem, the user manually inserts the motor into the mis-touching groove 19 through the notch 20 and detents one end of the unlocking knob 15, so that the unlocking knob 15 drives the inner rod 6 to pull the unlocking slider 13 to move along the length direction of the unlocking groove 12, and squeezes the resisting spring 14 to produce a contraction deformation, and at the same time, the unlocking knob 15 is disengaged from the mis-touching groove 19 along the length direction of the inner rod 6, and the inner rod 6 drives the bevel gear 1 7 to disengage from the meshing with the bevel gear 2 9, and then the unlocking knob 15 is rotated to unlock the gear 1. The knob 15 drives the inner rod 6 to cooperate with the synchronous assembly to pull the protective cover 3 to rotate around the hinge axis, and releases the protective cover 3 from covering one side of the projection window 4. Then, the fixed rod 18 is manually pushed to move along the length direction of the storage slide groove 17, and one end of the fixed rod 18 is inserted into the interior of the arched block 16, so as to fix the protective cover 3. In this way, when the driving motor 8 cannot open the protective cover 3, the protective cover 3 can be released from covering the projection window 4 by manually rotating the unlocking knob 15, which effectively improves the application range of the device.

[0041] Then, when it is necessary to drive the bevel gear 17 to re-engage with the bevel gear 2 9, the fixed plug rod 18 is manually pushed out of the interior of the arch block 16 and moved into the storage slot 17 for storage. Then, the resistance spring 14 is relieved of the force and produces a rebound deformation, so that the resistance spring 14 pushes out the unlocking slider 13 along the length direction of the unlocking slot 12. At the same time, the unlocking slider 13 pushes the inner plug rod 6 to drive the bevel gear 17 to move toward the bevel gear 2 9 along the length direction of the unlocking slot 12. Then, by turning the unlocking knob 15 left and right, the inner plug rod 6 is driven to adjust the bevel gear 17 to align and mesh with the tooth mouth of the bevel gear 2 9, thereby facilitating the re-engagement of the bevel gear 1 7 and the bevel gear 2 9, thereby improving the practicability of the device.

[0042] Reference Figure 2 and Figure 3 , a flexible sealing strip 21 is fixedly connected to the inner side of the protective cover 3;

[0043] A pair of flow openings 22 are symmetrically opened at one end of the flexible sealing strip 21, and a pair of exhaust openings 23 are symmetrically opened at the bottom of the protective cover 3;

[0044] Furthermore, a sponge block 24 is fixedly connected to the interior of the exhaust port 23 .

[0045] When in use, firstly, by setting the flexible sealing strip 21, the inner side of the protective cover 3 passes through the projection window 4 and forms a flexible contact with the projector lens, thereby effectively reducing the wear between the protective cover 3 and the projector lens, and when the protective cover 3 is driven to cover one side of the projection window 4, the protective cover 3 is connected with the external air through the circulation port 22 and the exhaust port 23, thereby effectively reducing the temperature difference between the inside and outside of the casing 1, and further reducing the damage to the projector lens caused by water vapor generated by the temperature difference. At the same time, by setting the sponge block 24, the water vapor in the air passing through the exhaust port 23 can be effectively absorbed, and the air passing through the exhaust port 23 can be filtered and intercepted, thereby reducing the entry of foreign matter such as dust and improving the safety of the device.

[0046] The implementation principle of the device for protecting the projector lens of the present embodiment is as follows: first, a sensor for detecting the power state is arranged inside the projector, and the sensor is electrically connected to the drive motor 8, so that when the sensor detects that the power of the projector is turned off, the signal is transmitted to the drive motor 8, and the drive motor 8 is started to drive the bevel gear 2 9 to mesh with the bevel gear 1 7, and at the same time, the bevel gear 2 9 drives the inner rod 6 to rotate, and the inner rod 6 drives the synchronous slider 11 to form a conflict with the inner wall of the synchronous slide groove 10, and pushes the protective cover 3 to rotate around the hinge axis, so that the protective cover 3 rotates around the hinge axis and is embedded in the projection window 4, and the projection window 4 is covered;

[0047] Then, when the driving motor 8 fails to start due to a problem, the user manually passes through the notch 20 and inserts the unlocking knob 15 into the inside of the mis-touch groove 19, and depresses one end of the unlocking knob 15, so that the unlocking knob 15 drives the inner rod 6 to pull the unlocking slider 13 to move along the length direction of the unlocking groove 12, and squeezes the resistance spring 14 to produce a contraction deformation, and at the same time, the unlocking knob 15 is disengaged from the inside of the mis-touch groove 19 along the length direction of the inner rod 6, and the inner rod 6 drives the bevel gear 1 7 to disengage from the meshing with the bevel gear 2 9, and then the inner rod 6 is driven by the unlocking knob 15 to cooperate with the synchronous component to pull the protective cover 3 to rotate around the hinge axis, and the protective cover 3 is released from covering one side of the projection window 4, and then the fixed rod 18 is manually pushed to move along the length direction of the storage slide groove 17, and one end of the fixed rod 18 is inserted into the inside of the arch block 16, so as to fix the protective cover 3;

[0048] Then, when the driving motor 8 is restored and it is necessary to drive the bevel gear 1 7 to re-engage with the bevel gear 2 9, the fixed plug rod 18 is manually pushed out of the interior of the arch block 16 and moved to the interior of the storage slide groove 17 for storage. Then, the resistance spring 14 is relieved of the force and produces a rebound deformation, so that the resistance spring 14 pushes out the unlocking slider 13 along the length direction of the unlocking groove 12. At the same time, the unlocking slider 13 pushes the inner plug rod 6 to drive the bevel gear 1 7 to move toward the bevel gear 2 9 along the length direction of the unlocking groove 12. Then, by turning the unlocking knob 15 left and right, the inner plug rod 6 is driven to adjust the bevel gear 1 7 to align and mesh with the tooth mouth of the bevel gear 2 9.

Claims

1. A device for protecting a projector lens, comprising a housing (1), characterized in that: The top of the casing (1) is provided with a driving groove (2), the interior of the driving groove (2) is rotatably connected to a protective cover (3), one side of the casing (1) is provided with a projection window (4), one end of the driving groove (2) is embedded in the interior of the projection window (4), an inner groove (5) is provided at the hinge shaft end of the protective cover (3), an inner insertion rod (6) is inserted into the interior of the inner groove (5), one end of the inner insertion rod (6) is fixedly connected to a bevel gear 1 (7), the interior of the driving groove (2) is fixedly connected to a driving motor (8), the output end of the driving motor (8) is fixedly connected to a bevel gear 2 (9) meshing with the bevel gear 1 (7), and one end of the inner insertion rod (6) is installed with a synchronizing component for driving the protective cover (3) to rotate synchronously around the hinge shaft.

2. The device for protecting a projector lens according to claim 1, characterized in that: The synchronization component comprises a synchronization slide groove (10) symmetrically arranged inside the inner groove (5); one end of the inner insertion rod (6) is symmetrically fixedly connected with a synchronization slider (11); and the synchronization slider (11) is slidably connected inside the synchronization slide groove (10).

3. The device for protecting a projector lens according to claim 1, characterized in that: An unlocking groove (12) is formed at one end of the casing (1), an unlocking slider (13) is fixedly connected to one end of the inner rod (6), and the unlocking slider (13) is slidably connected to the inside of the unlocking groove (12). An interference spring (14) is fixedly connected to one end of the unlocking slider (13), and the interference spring (14) is installed inside the unlocking groove (12). One end of the inner rod (6) passes through the casing (1) and is fixedly connected to an unlocking knob (15). A fixing component for fixing the protective cover (3) is installed at one end of the casing (1).

4. The device for protecting a projector lens according to claim 3, characterized in that: The fixing assembly comprises an arched block (16) fixedly connected to one side of the protective cover (3); a receiving slot (17) is provided on the top of the housing (1); a fixing rod (18) is slidably connected to the inside of the receiving slot (17); one end of the fixing rod (18) is inserted into the inside of the arched block (16).

5. The device for protecting a projector lens according to claim 3, characterized in that: An error-touch groove (19) is provided on the outer side of the casing (1), a notch (20) is provided at the bottom of the error-touch groove (19), and the unlocking knob (15) is embedded in the error-touch groove (19).

6. The device for protecting a projector lens according to claim 1, characterized in that: A flexible sealing strip (21) is fixedly connected to the inner side of the protective cover (3).

7. The device for protecting a projector lens according to claim 6, characterized in that: A pair of flow openings (22) are symmetrically formed at one end of the flexible sealing strip (21), and a pair of exhaust openings (23) are symmetrically formed at the bottom of the protective cover (3).

8. The device for protecting a projector lens according to claim 7, characterized in that: A sponge block (24) is fixedly connected to the interior of the exhaust port (23).

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