Privacy cover assembly for a projector

Abstract

The utility model discloses a privacy cover assembly for projector, including lens holder, be provided with lens module on the lens holder, and lens module includes lens, still include the support frame of installation in the front end of lens holder, and the support frame mouth of being used for letting the support frame of lens module is opened on the support frame, still be connected with the mounting bracket on the support frame, and the screw rod rotatably connected with on the mounting bracket, still be installed with the screw rod drive arrangement of being used for driving the rotation of screw rod on the mounting bracket, and the nut seat is cooperated with on the screw rod, and the cover plate is connected with on the nut seat, and the cover plate mouth of being used for letting the lens is opened on the cover plate. The utility model discloses small -range removal cover plate can control the relative position of cover plate mouth and lens to reach the shielding or opening action, and thus, can reduce the inertia influence of moving part greatly, in addition, the mechanical type direct shielding mechanism is completely independent of projector electronic system, avoids the response failure caused by software delay or system failure.

Description

Technical Field

[0001] This utility model relates to the field of projector cutting technology, and in particular to a privacy cover assembly for a projector. Background Technology

[0002] A projector is a display device that magnifies and projects images onto a screen or wall using an optical lens, and is widely used in scenarios such as meetings, education, and home entertainment. However, in actual use, operational errors, system malfunctions, or malicious attacks (such as hacking) may lead to abnormal projected content or leakage of sensitive information. In such cases, it is necessary to immediately stop the projection to prevent further dissemination of information or adverse effects.

[0003] Currently, the common emergency cut-off projection methods mainly include the following two:

[0004] 1. Directly cutting off the power: While this method can quickly stop projection, frequent hard shutdowns can damage the projector's electronic components (such as the lamp and power module), affecting the device's lifespan. Furthermore, restarting the projector usually requires a long warm-up time, causing interruptions and impacting efficiency.

[0005] 2. Shutting down the projector via the operating system: Compared to directly cutting off the power, this method has less impact on the hardware. However, in cases of system lag, unresponsive programs, or network attacks, the shutdown command may not be executed in time. Furthermore, the operating system's shutdown process typically takes several seconds or even longer, potentially missing the optimal shutdown window and failing to meet the need for rapid response in emergencies. Utility Model Content

[0006] The purpose of this invention is to overcome the aforementioned problems of the prior art and provide a privacy cover assembly for a projector, which has the advantages of fast response, stable operation and reliability.

[0007] The objective of this utility model is mainly achieved through the following technical solutions:

[0008] A privacy cover assembly for a projector includes a lens mount, a lens module mounted on the lens mount, the lens module including a lens, and a support frame mounted on the front end of the lens mount, the support frame having a support frame opening for accommodating the lens module.

[0009] The support frame is also connected to a mounting frame, and a lead screw is rotatably connected to the mounting frame. The mounting frame is also equipped with a lead screw drive device for driving the lead screw to rotate.

[0010] The lead screw is fitted with a nut seat, and a cover plate is connected to the nut seat. The cover plate has a cover plate opening that can be used to allow the lens to move.

[0011] The lead screw drive device, through the cooperation of the lead screw and the nut seat, enables the cover plate to slide left and right in the area where the support frame opening is located, and the cover plate opening can be in a state of being directly opposite or misaligned with the lens.

[0012] Furthermore, both the upper and lower ends of the support frame are connected to support frame limiting sections, and the two support frame limiting sections are symmetrically arranged and located on the upper and lower sides of the support frame opening, respectively.

[0013] Limit grooves are provided on both support frame limiting sections;

[0014] The cover plate is provided with limiting protrusions on both the upper and lower sides, which can be inserted and cooperate with the limiting slide groove and can slide relative to the limiting slide groove.

[0015] Furthermore, the cover plate is provided with several limiting protrusions on both the upper and lower sides, and the ends of the limiting protrusions are hemispherical.

[0016] Furthermore, the mounting bracket has an upper limit segment and a lower limit segment spaced apart from the upper limit segment;

[0017] The top of the nut seat has an upper extension that can abut against the front end of the upper limit segment, and the bottom of the nut seat has a lower extension that can abut against the front end of the lower limit segment.

[0018] Furthermore, the mounting bracket has a left mounting section and a right mounting section spaced apart from the left mounting section;

[0019] The two ends of the lead screw are rotatably connected to the left mounting section and the right mounting section respectively via bearings.

[0020] Furthermore, the upper area of ​​the mounting bracket on the left mounting section is an unused area;

[0021] The right end of the cover plate passes through the aforementioned unused area and is connected to the nut seat.

[0022] Furthermore, the front end of the nut seat is provided with a connection notch A, and a connection threaded hole is provided at the connection notch A;

[0023] The right end of the cover plate has a connecting section that passes through the idle area. The end of the connecting section has a connecting piece. The rear end of the connecting piece has a connecting notch B that can abut against the connecting notch A. A connecting through hole corresponding to the connecting thread hole is provided at the connecting notch B.

[0024] It also includes a locking screw, which passes through the connecting through hole and is threaded into the connecting threaded hole.

[0025] Furthermore, the rear end of the cover plate is provided with a clearance notch for accommodating the lens and the lens module, and the clearance notch penetrates the left end face of the cover plate.

[0026] Furthermore, the support frame is provided with a plurality of support frame connection holes for detachable connection with the lens mount.

[0027] Furthermore, the support frame is provided with several quick positioning holes;

[0028] The rear end of the mounting bracket is provided with several quick-positioning protrusions that each engage with several quick-positioning holes.

[0029] This utility model has the following beneficial effects: This utility model provides a lens blocking device suitable for compact projectors. Its technical solution achieves multiple technical advantages through innovative mechanical structure and optimized motion control, specifically:

[0030] 1. Fast Response and Precise Positioning System: The transmission mechanism uses a lead screw and nut seat to control the axial displacement of the cover plate through precision thread transmission; a small range of movement of the cover plate can control the relative position of the cover plate opening and the lens to achieve the blocking or opening action, thus greatly reducing the inertial influence of moving parts; the mechanical direct blocking mechanism is completely independent of the projector's electronic system, avoiding response failure caused by software delay or system failure;

[0031] 2. Multi-stage stabilizing guide system: The main stabilizing system is the combination of the limiting protrusion and the limiting slide, which can improve the sensitivity and stability of the cover plate movement; the auxiliary stabilizing system is the combination of the upper extension section and the upper limit section, and the combination of the lower extension section and the lower limit section, which can effectively improve the stability of the nut seat and the cover plate movement. The multi-stage stabilizing guide system can effectively suppress pitch and yaw vibrations during the movement. Attached Figure Description

[0032] To more clearly illustrate the embodiments of this utility model, the accompanying drawings used in describing the embodiments of this utility model will be briefly described below. Obviously, the drawings described below are merely some embodiments recorded in this utility model. Those skilled in the art can derive other drawings from the following drawings without any creative effort.

[0033] Figure 1 This is a schematic diagram of a specific embodiment of the lens holder, lens module, and lens in the privacy cover assembly for a projector described in this utility model;

[0034] Figure 2 This is a schematic diagram of a specific embodiment of the lens holder, support frame, and mounting frame in the privacy cover assembly for a projector described in this utility model;

[0035] Figure 3 and Figure 4This is a schematic diagram of a specific embodiment of the support frame, cover plate, and mounting frame in the privacy cover assembly for a projector described in this utility model;

[0036] Figure 5 and Figure 6 This is a schematic diagram of a specific embodiment of the lead screw, nut seat, and lead screw drive device in the privacy cover assembly for a projector described in this utility model.

[0037] Figure 7 and Figure 8 This is a schematic diagram of a specific embodiment of the nut seat and cover plate in the privacy cover assembly for a projector according to the present invention;

[0038] Figure 9 This is a schematic diagram of a specific embodiment of the cover plate in the privacy cover assembly for a projector according to the present invention;

[0039] Figure 10 This is a schematic diagram of a specific embodiment of the support frame in the privacy cover assembly for a projector according to the present invention.

[0040] The component names corresponding to the reference numerals in the attached drawings are as follows: 1. Lens holder, 2. Lens, 3. Lens module, 4. Support frame, 5. Support frame opening, 6. Mounting bracket, 7. Lead screw, 8. Lead screw drive device, 9. Nut seat, 10. Cover plate, 11. Cover plate opening, 12. Support frame limiting section, 13. Limiting groove, 14. Limiting protrusion, 15. Left mounting section, 16. Right mounting section, 17. Upper limiting section, 18. Lower limiting section, 19. Upper extension section, 20. Lower extension section, 21. Connecting notch A, 22. Connecting section, 23. Connecting piece, 24. Connecting notch B, 25. Connecting threaded hole, 26. Connecting through hole, 27. Locking screw, 28. Clearance notch, 29. Support frame connecting hole, 30. Quick positioning hole, 31. Quick positioning protrusion. Detailed Implementation

[0041] To enable those skilled in the art to better understand this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments described in this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0042] Example 1

[0043] like Figures 1 to 10As shown, the privacy cover assembly for a projector includes a lens mount 1, a lens module 3 is mounted on the lens mount 1, the lens module 3 includes a lens 2, and a support frame 4 mounted on the front end of the lens mount 1. The support frame 4 has a support frame opening 5 for accommodating the lens module 3.

[0044] The support frame 4 is also connected to the mounting frame 6, the mounting frame 6 is rotatably connected to the lead screw 7, and the mounting frame 6 is also equipped with a lead screw drive device 8 for driving the lead screw 7 to rotate.

[0045] The lead screw 7 is fitted with a nut seat 9, and a cover plate 10 is connected to the nut seat 9. The cover plate 10 has a cover plate opening 11 that can be used to allow the lens 2 to be positioned.

[0046] The lead screw drive device 8, through the cooperation of the lead screw 7 and the nut seat 9, enables the cover plate 10 to slide left and right in the area where the support frame opening 5 is located, and the cover plate opening 11 to be in a state of being directly opposite or misaligned with the lens 2.

[0047] In this embodiment, the lead screw drive device 8 can be a geared motor. The support frame opening 5 is used to allow space for the lens module 3 and the lens 2.

[0048] In application, starting the lead screw drive device 8 will drive the lead screw 7 to rotate. Through the cooperation between the nut seat 9 and the lead screw 7, the cover plate 10 connected to the nut seat 9 can be moved left and right. When the cover plate opening 11 is directly facing the lens 2, the lens 2 can perform normal projection. When the cover plate opening 11 is misaligned with the lens 2, the cover plate 10 is in a state of blocking the projection of the lens 2. In this way, it can quickly respond to the situation of misprojection or incorrect projection, and will not have an adverse effect on the life of the projector or the operating system, which is highly timely and safe.

[0049] The key to the opening and closing of the cover plate 10 lies in the relative position between the cover plate opening 11 and the lens 2. Therefore, in this embodiment, the lens 2 can be blocked or opened by only moving the cover plate 10 slightly. This design can significantly improve the stability and reliability of operation.

[0050] Preferably, the upper and lower ends of the support frame 4 are connected to support frame limiting sections 12, and the two support frame limiting sections 12 are symmetrically arranged and located on the upper and lower sides of the support frame opening 5 respectively.

[0051] Limiting grooves 13 are provided on both support frame limiting sections 12;

[0052] The cover plate 10 is provided with limiting protrusions 14 on both the upper and lower sides, which can be inserted and cooperate with the limiting slide groove 13 and can slide relative to the limiting slide groove 13.

[0053] In this embodiment, the stability of the cover plate 10 moving left and right can be effectively improved by the cooperation of the limiting protrusion 14 and the limiting slide groove 13.

[0054] Preferably, the cover plate 10 has a plurality of limiting protrusions 14 on both the upper and lower sides, and the end of the limiting protrusion 14 is hemispherical.

[0055] In this embodiment, several limiting protrusions 14 located on the same side are arranged at intervals, and the ends of the limiting protrusions 14 are hemispherical, which can ensure both the sensitivity and stability of the movement of the cover plate 10.

[0056] Preferably, the mounting bracket 6 has an upper limit segment 17 and a lower limit segment 18 spaced apart from the upper limit segment 17;

[0057] The top end of the nut seat 9 has an upper extension section 19 that can abut against the front end of the upper limit section 17, and the bottom end of the nut seat 9 has a lower extension section 20 that can abut against the front end of the lower limit section 18.

[0058] In this embodiment, the cooperation between the upper extension section 19 and the upper limit section 17, and the cooperation between the lower extension section 20 and the lower limit section 18, can improve the stability of the nut seat 9 driving the cover plate 10 to move and reduce shaking and vibration.

[0059] To enable the rotatable setting of the lead screw 7, preferably, the mounting bracket 6 has a left mounting section 15 and a right mounting section 16 spaced apart from the left mounting section 15;

[0060] The two ends of the lead screw 7 are rotatably connected to the left mounting section 15 and the right mounting section 16 via bearings, respectively.

[0061] For structural optimization, preferably, the area above the left mounting section 15 of the mounting bracket 6 is an unused area;

[0062] The right end of the cover plate 10 passes through the aforementioned unused area and is connected to the nut seat 9.

[0063] Preferably, the front end of the nut seat 9 is provided with a connection notch A21, and a connection threaded hole 25 is provided at the connection notch A21;

[0064] The right end of the cover plate 10 has a connecting section 22 that passes through the idle area. The end of the connecting section 22 has a connecting piece 23. The rear end of the connecting piece 23 has a connecting notch B24 that can abut against the connecting notch A21. A connecting through hole 26 corresponding to the connecting threaded hole 25 is provided at the connecting notch B24.

[0065] It also includes a locking screw 27, which passes through the connecting through hole 26 and is threadedly connected to the connecting threaded hole 25.

[0066] In this embodiment, the cooperation between the connecting notch A21 and the connecting notch B24 can improve the stability of the connection between the cover plate 10 and the nut seat 9, and prevent them from moving unexpectedly during operation.

[0067] Preferably, the rear end of the cover plate 10 is provided with a clearance notch 28 for accommodating the lens 2 and the lens module 3, and the clearance notch 28 penetrates the left end face of the cover plate 10.

[0068] This embodiment is applicable to projectors with a relatively compact structure, that is, projectors with a smaller and flatter lens 2. The design of the clearance notch 28 can ensure that the lens 2 is not damaged and that the movement of the cover plate 10 is reliable.

[0069] Preferably, the support frame 4 has a plurality of support frame connection holes 29 for detachable connection with the lens frame 1.

[0070] The detachable design of the support frame 4 and the lens holder 1 facilitates the installation, removal and replacement of the support frame 4, thereby improving the applicability of this embodiment.

[0071] Preferably, the support frame 4 is provided with a plurality of quick positioning holes 30;

[0072] The rear end of the mounting bracket 6 is provided with a number of quick positioning protrusions 31 that respectively cooperate with a number of quick positioning holes 30.

[0073] In this embodiment, the quick positioning hole 30 and the quick positioning protrusion 31 can be used to quickly position the mounting bracket 6 and the support bracket 4 for subsequent connection operations, and can also prevent the mounting bracket 6 from moving unexpectedly during subsequent operation.

[0074] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A privacy cover assembly for a projector, comprising a lens mount (1), a lens module (3) disposed on the lens mount (1), the lens module (3) comprising a lens (2), characterized in that: It also includes a support frame (4) installed at the front end of the lens holder (1), and the support frame (4) has a support frame opening (5) for making way for the lens module (3); The support frame (4) is also connected to the mounting frame (6), the mounting frame (6) is rotatably connected to the lead screw (7), and the mounting frame (6) is also equipped with a lead screw drive device (8) for driving the lead screw (7) to rotate. A nut seat (9) is fitted on the lead screw (7), and a cover plate (10) is connected to the nut seat (9). The cover plate (10) has a cover plate opening (11) that can be used to make way for the lens (2). The lead screw drive device (8) enables the cover plate (10) to slide left and right in the area where the support frame opening (5) is located through the cooperation of the lead screw (7) and the nut seat (9), and the cover plate opening (11) can be in a state of being directly opposite or misaligned with the lens (2).

2. The privacy cover assembly for a projector according to claim 1, characterized in that: The upper and lower ends of the support frame (4) are connected to support frame limiting sections (12), and the two support frame limiting sections (12) are symmetrically arranged and located on the upper and lower sides of the support frame opening (5); Limiting grooves (13) are provided on both support frame limiting sections (12); The cover plate (10) is provided with limiting protrusions (14) on both the upper and lower sides, which can be inserted into and cooperate with the limiting slide groove (13) and can slide relative to the limiting slide groove (13).

3. The privacy cover assembly for a projector according to claim 2, characterized in that: The cover plate (10) is provided with several limiting protrusions (14) on both the upper and lower sides, and the end of the limiting protrusions (14) is hemispherical.

4. The privacy cover assembly for a projector according to claim 1, characterized in that: The mounting bracket (6) has an upper limit section (17) and a lower limit section (18) spaced apart from the upper limit section (17); the top of the nut seat (9) has an upper extension section (19) that can abut against the front end of the upper limit section (17), and the bottom of the nut seat (9) has a lower extension section (20) that can abut against the front end of the lower limit section (18).

5. The privacy cover assembly for a projector according to claim 1, characterized in that: The mounting bracket (6) has a left mounting section (15) and a right mounting section (16) spaced apart from the left mounting section (15); the two ends of the lead screw (7) are rotatably connected to the left mounting section (15) and the right mounting section (16) respectively by bearings.

6. The privacy cover assembly for a projector according to claim 5, characterized in that: The area above the left mounting section (15) of the mounting bracket (6) is an unused area; The right end of the cover plate (10) passes through the aforementioned unused area and is connected to the nut seat (9).

7. The privacy cover assembly for a projector according to claim 6, characterized in that: The nut seat (9) has a connection notch A (21) at its front end, and a connection thread hole (25) is provided at the connection notch A (21); The right end of the cover plate (10) has a connecting section (22) that passes through the idle area. The end of the connecting section (22) has a connecting piece (23). The rear end of the connecting piece (23) has a connecting notch B (24) that can abut against the connecting notch A (21). The connecting notch B (24) has a connecting through hole (26) that corresponds to the connecting threaded hole (25). It also includes a locking screw (27), which passes through the connecting through hole (26) and is threaded into the connecting threaded hole (25).

8. The privacy cover assembly for a projector according to claim 1, characterized in that: The rear end of the cover plate (10) is provided with a clearance notch (28) for making way for the lens (2) and the lens module (3), and the clearance notch (28) penetrates the left end face of the cover plate (10).

9. The privacy cover assembly for a projector according to any one of claims 1-8, characterized in that: The support frame (4) has several support frame connection holes (29) for detachable connection with the lens frame (1).

10. The privacy cover assembly for a projector according to claim 9, characterized in that: The support frame (4) is provided with several quick positioning holes (30); The rear end of the mounting bracket (6) is provided with a number of quick positioning protrusions (31) that respectively cooperate with a number of quick positioning holes (30).

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