Protective cover capable of hovering and being opened and closed at large angle for light guide plate

Abstract

The hovering wide-angle opening and closing protective cover comprises a protective frame and an installation frame internally provided with the light guide plate, a protective plate is fixedly installed in an inner cavity of the protective frame, and the end portion of the right side of the protective frame is installed on the front portion of the right side of the installation frame through a rotary connecting piece in a connected mode. And limiting connecting pieces used for being connected with the rotating connecting pieces so as to achieve hovering of the protection frame are arranged in the upper side and the lower side of the protection frame, and a fixed connecting piece used for being connected with the mounting frame is arranged on the left side of the protection frame. Therefore, the light guide plate in the internal mounting frame can be directly protected and prevented from being damaged by external collision, scraping and the like, so that the light guide plate is effectively prevented from being damaged.

Description

Technical Field

[0001] This utility model relates to the technical field of opening and closing protective covers for light guide plates, specifically a light guide plate with a large-angle opening and closing protective cover that can be suspended. Background Technology

[0002] The design principle of light guide plates originated from the LCD screen of laptops. It is a high-tech product that transforms line light sources into surface light sources. It has distinctive features such as ultra-thinness, ultra-brightness, uniform light guidance, and durability, which has led to its widespread application in LCD screens, LED lighting, advertising light boxes and other fields.

[0003] Currently, Chinese patent CN220773317U discloses an adjustable angle light guide plate, including a mounting frame. The mounting frame has an internal mounting groove, and a rubber strip is fixedly connected to the inner bottom wall of the mounting groove. The top of the rubber strip is movably connected to the light guide plate body. A mounting plate is movably connected to the front of the mounting frame. An adjusting screw extending into the adjusting groove is fixedly connected to the bottom end of a cross-shaped handle. A threaded block is threaded onto the surface of the adjusting screw. An adjusting plate extending into the mounting groove is fixedly connected to one side of the threaded block. A flexible strip is fixedly connected to the bottom end of the adjusting plate. Through the set adjustment components, rotating the cross-shaped handle with a screwdriver or other tool rotates the adjusting screw, causing the threaded block to move and lower or raise the adjusting plate. This, in turn, presses down or raises one side of the top of the light guide plate body via the flexible strip, causing the light guide plate body to tilt, thus achieving its angle adjustment.

[0004] The aforementioned adjustable angle light guide plate has some problems in use. Although the movement of the threaded block causes the adjustment plate to descend or rise, and then the flexible strip presses down or rises one side of the top of the light guide plate body, causing the light guide plate body to tilt and achieve its angle adjustment, the surface of the mounting frame does not have a device to protect the light guide plate. Once the light guide plate is subjected to external impact, collision or scratch, it will inevitably lead to damage to the microstructure, affecting the uniformity of light effect, and thus affecting the use effect of the light guide plate. Utility Model Content

[0005] The purpose of this invention is to provide a protective cover for a light guide plate that can be suspended and opened at a large angle, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A light guide plate protective cover with a large-angle opening and closing mechanism includes a protective frame and a mounting frame in which a light guide plate is installed. The protective plate is fixedly installed in the inner cavity of the protective frame. The right end of the protective frame is connected to the front right side of the mounting frame via a rotating connector. Limiting connectors for connecting the rotating connector to the upper and lower sides of the protective frame are provided inside to achieve the suspension of the protective frame. A fixing connector for connecting the mounting frame is provided on the left side of the protective frame.

[0008] As a preferred technical solution, the rotating connector includes several sets of fixing blocks fixedly installed on the front right side of the mounting frame. The several sets of fixing blocks are arranged from bottom to top. A connecting rod is fixedly installed between the several sets of fixing blocks. Bearings are sleeved on both the upper and lower surfaces of the connecting rod. One side of the bearing is fixedly installed on the right end surface of the protective frame. Limiting rings are rotatably connected to the opposite ends of the two sets of bearings. The two sets of limiting rings are respectively fixedly sleeved on the surface of the connecting rod.

[0009] As a preferred technical solution, the limiting connector includes a square groove formed inside the left side of the protective frame and arranged along its height. A square plate is slidably connected to the inner cavity of the square groove. Abutment plates are fixedly connected to the upper and lower parts of the right side of the square plate. A toothed ring is fixedly fitted on the surface of the connecting plate and at a position corresponding to each set of abutment plates. A toothed groove is formed at the right end of each set of abutment plates that matches the teeth of the toothed ring. The right end of each set of abutment plates slides through the protective frame and the toothed groove at the end engages with the toothed ring at the corresponding position. An elastic pushing component is provided inside the upper and lower sides of the protective frame to push the abutment plates to the right. A square hole communicating with the square groove is formed from the front left side of the protective frame.

[0010] As a preferred technical solution, the elastic pushing component includes circular grooves respectively opened inside the upper and lower sides of the protective frame. The inner cavities of the two sets of circular grooves are slidably connected with sliding rings. The two sets of sliding rings are respectively fixedly sleeved on the surface of the corresponding side abutment plate. The right inner wall of the two sets of circular grooves is provided with springs. The other end of the two sets of springs respectively contacts the surface of the corresponding side sliding ring.

[0011] As a preferred technical solution, the fixing connector includes a clamping plate fixedly connected to the left end of the square plate located in the inner cavity of the square hole. The end of the clamping plate passes through the protective frame to the left and is bent to the side of the mounting frame. The left end of the protective frame is provided with a slot for the bent end of the clamping plate to be inserted.

[0012] As a preferred technical solution, a hand-tightening bolt is threaded to the left end of the protective frame, and a fixing ring is fitted to the end of the hand-tightening bolt, which is fixedly connected to the surface of the card plate.

[0013] As a preferred technical solution, a support plate is fixedly installed on the bottom left side of the mounting frame, the front end of the support plate extends forward, and the upper part of the forward-extending end of the support plate contacts the bottom of the protective frame.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model, through the setting of a protective frame and a protective plate, with the protective plate fixedly installed in the inner cavity of the protective frame, can directly protect the light guide plate in the inner mounting frame, preventing it from being damaged by external collisions, scratches, etc., thereby effectively avoiding damage to the light guide plate.

[0016] 2. By setting a limiting connector, this utility model can drive the abutment plate to engage or separate from the toothed ring when the square plate slides in the square groove, thereby enabling the protective frame to be suspended at different angles. This makes it convenient to keep the position of the protective frame fixed when operating the light guide plate without the need for manual support.

[0017] 3. This utility model, through the setting of the elastic pushing component, the spring in the elastic pushing component provides an elastic force to the right of the abutment plate, so that the abutment plate can automatically engage with the toothed ring, ensuring that the protective frame can be stably suspended after rotating to a suitable angle without additional operation to fix the angle. At the same time, while the spring plays a pushing role, it can also play a certain buffering role when the abutment plate engages or disengages with the toothed ring, reducing the impact between components, extending the service life, and allowing the abutment plate to quickly return to its original position after the external force disappears. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the light guide plate protective cover that can be suspended and opened at a large angle according to this utility model;

[0019] Figure 2 This is a schematic diagram of the slot structure of this utility model;

[0020] Figure 3 This is a cross-sectional view of the protective frame of this utility model;

[0021] Figure 4 This is a structural diagram showing the location of the tooth groove in this utility model.

[0022] In the picture:

[0023] 100. Mounting frame; 101. Gear ring; 102. Connecting rod; 103. Bearing; 104. Limiting ring; 105. Fixing block;

[0024] 200. Protective frame; 201. Protective plate; 202. Abutment plate; 203. Square hole; 204. Square plate; 205. Toothed groove; 206. Clamping plate; 207. Hand-tightening bolt; 208. Retaining ring; 209. Square groove; 210. Slot;

[0025] 300, circular groove; 301, spring; 302, sliding ring;

[0026] 400. Support plate. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-4 This embodiment provides a suspended, large-angle opening and closing protective cover for a light guide plate, including a protective frame 200 and a mounting frame 100 in which a light guide plate is installed. A protective plate 201 is fixedly installed in the inner cavity of the protective frame 200. The right end of the protective frame 200 is connected to the front right side of the mounting frame 100 via a rotating connector. Limiting connectors for connecting the rotating connectors to achieve suspension of the protective frame 200 are provided inside the upper and lower sides of the protective frame 200. A fixing connector for connecting the mounting frame 100 is provided on the left side of the protective frame 200. Through the setting of the protective frame 200 and the protective plate 201, the protective plate 201 is fixedly installed in the inner cavity of the protective frame 200, which can directly protect the light guide plate in the inner mounting frame 100 from external collisions, scratches and other damage, thereby effectively avoiding damage to the light guide plate. The protective plate 201 is one or a combination of transparent glass plate and transparent acrylic plate.

[0029] The rotating connector includes several sets of fixing blocks 105 fixedly installed on the front right side of the mounting frame 100. The sets of fixing blocks 105 are arranged from bottom to top, and connecting rods 102 are fixedly installed between the sets of fixing blocks 105. Bearings 103 are sleeved on both the upper and lower surfaces of the connecting rods 102. One side of the bearings 103 is fixedly installed on the right end surface of the protective frame 200. The opposite ends of the two sets of bearings 103 are rotatably connected to limit rings 104. The two sets of limit rings 104 are respectively fixedly sleeved on the surface of the connecting rods 102. Through the setting of the rotating connector, the bearings 103 are installed on the connecting rods 102 and fixedly connected to the protective frame 200, so that the protective frame 200 can rotate flexibly around the connecting rods 102, which makes it easy to open the protective frame 200 to operate the light guide plate. At the same time, the limit rings 104 can restrict the axial movement of the bearings 103 and improve the stability of rotation.

[0030] The limiting connector includes a square groove 209 formed inside the left side of the protective frame 200 and arranged along its height. A square plate 204 is slidably connected to the inner cavity of the square groove 209. Abutment plates 202 are fixedly connected to the upper and lower parts of the right side of the square plate 204. A toothed ring 101 is fixedly fitted on the surface of the connecting plate and at a position corresponding to each set of abutment plates 202. A toothed groove 205 that matches the teeth of the toothed ring 101 is formed at the right end of each set of abutment plates 202. The right end of each set of abutment plates 202 slides through the protective frame 200 and has a toothed groove at its end. The toothed groove 205 engages with the toothed ring 101 at the corresponding position. The upper and lower sides of the protective frame 200 are both provided with elastic pushing components that push the abutment plate 202 to the right. The protective frame 200 has a square hole 203 that connects to the square groove 209 from the front left side. With the setting of the limiting connector, when the square plate 204 slides in the square groove 209, it can drive the abutment plate 202 to engage or separate from the toothed ring 101, thereby realizing the suspension of the protective frame 200 at different angles. This makes it convenient to keep the position of the protective frame 200 fixed when operating the light guide plate without manual support.

[0031] The elastic pushing component includes circular grooves 300 respectively opened inside the upper and lower sides of the protective frame 200. Sliding rings 302 are slidably connected to the inner cavities of the two sets of circular grooves 300. The two sets of sliding rings 302 are respectively fixedly sleeved on the surface of the corresponding side abutment plate 202. Springs 301 are provided on the inner wall of the right side of the two sets of circular grooves 300. The other end of the two sets of springs 301 respectively contacts the surface of the corresponding side sliding ring 302. Through the setting of the elastic pushing component, the springs 301 in the elastic pushing component provide elastic force to the right of the abutment plate 202, so that the abutment plate 202 can automatically engage with the toothed ring 101, ensuring that the protective frame 200 can be stably suspended after rotating to a suitable angle without additional operation to fix the angle. At the same time, while the springs 301 play a pushing role, they can also play a certain buffering role when the abutment plate 202 engages or disengages from the toothed ring 101, reducing the impact between components, extending the service life, and enabling the abutment plate 202 to quickly reset after the external force disappears.

[0032] The fixing connector includes a retaining plate 206 fixedly connected to the left end of the square plate 204 located in the cavity of the square hole 203. The end of the retaining plate 206 extends to the left through the protective frame 200 and bends to the side of the mounting frame 100. The left end of the protective frame 200 has a slot 210 for the bent end of the retaining plate 206 to be inserted. Through the setting of the fixing connector, the cooperation between the retaining plate 206 and the slot 210 realizes the quick connection and fixation between the protective frame 200 and the mounting frame 100. The bending design of the retaining plate 206 increases the stability of the connection, prevents the protective frame 200 from being accidentally opened during use, and effectively protects the light guide plate. Furthermore, when the square plate 204 is released, it moves to the right under the push of the spring 301, so that the end of the retaining plate 206 automatically engages in the slot 210 at the end of the mounting groove.

[0033] The left end of the protective frame 200 is threaded with a hand-tightening bolt 207, and the end of the hand-tightening bolt 207 is fitted with a retaining ring 208. The retaining ring 208 is fixedly connected to the surface of the clamping plate 206. The hand-tightening bolt 207 and the retaining ring 208 further strengthen the connection between the clamping plate 206 and the protective frame 200. By rotating the hand-tightening bolt 207, the clamping plate 206 can be more tightly fixed in the slot 210, which improves the reliability of the connection between the protective frame 200 and the mounting frame 100 and ensures that the protective device will not loosen during long-term use.

[0034] A support plate 400 is fixedly installed on the bottom left side of the mounting frame 100. The front end of the support plate 400 extends forward, and the upper part of the forward-extending end of the support plate 400 contacts the bottom of the protective frame 200. Through the setting of the support plate 400, the support plate 400 provides support for the protective frame 200. Especially after the protective frame 200 is closed and fixed, it can share part of the weight of the protective frame 200, reduce the pressure on the rotating connector and the fixed connector, prevent the protective frame 200 from sagging or deforming due to gravity, improve the stability of the entire protective device, and better protect the light guide plate.

[0035] Working principle;

[0036] Install the light guide plate inside the mounting frame 100, ensuring that the light guide plate is installed securely. Then connect the protective frame 200 to the mounting frame 100 via the rotating connector. At this time, the protective frame 200 can rotate relative to the mounting frame 100 around the rotating connector.

[0037] When it is necessary to open the protective frame 200 to inspect the light guide plate between the mounting frames 100;

[0038] First, unscrew the hand-tightening bolt 207 from the inner cavity of the fixing ring 208 to release the restriction on the clamping plate 206. Then, insert your hand into the square hole 203 and contact the square plate 204 located in the inner cavity of the square hole 203. At the same time, push the square plate 204 outward. The square plate 204 moves outward along the square groove 209 and drives the two sets of abutment plates 202 to move outward, so that the toothed groove 205 at the end of the abutment plate 202 is disengaged from the surface of the toothed ring 101. At this time, the bearing 103 installed at the end of the protective frame 200 can rotate around the connecting rod 102, so that the protective frame 200 can be opened to release the restriction on the light guide plate. The protective frame 200 can be rotated to a suitable large angle position as needed to facilitate the operation or maintenance of the light guide plate.

[0039] At the same time, as the abutment plate 202 moves outward, it drives the sliding ring 302 inside the circular groove 300 to move outward as well, and compresses the spring 301 inside the circular groove 300.

[0040] When the protective frame 200 is rotated to the required angle, the square plate 204 is released, and the elastic potential energy of the spring 301 is released. Under the pushing action of the spring 301, the abutment plate 202 moves to the right, and the toothed groove 205 at its end engages with the toothed ring 101 at the corresponding position, thereby enabling the protective frame 200 to be suspended at that angle, which facilitates related operations.

[0041] After the operation is completed, move the square plate 204 outward according to the above operation steps, and rotate the protective frame 200 to the closed position. At the same time, align the locking plate 206 on the left side of the protective frame 200 with the slot 210 on the mounting frame 100. Then, release the square plate 204. Under the push of the spring 301, the square plate 204 moves to the right, so that the end of the locking plate 206 is inserted into the slot 210 at the end of the mounting groove.

[0042] Then, the hand-tightening bolt 207 is removed and inserted into the inner cavity of the retaining ring 208, and threaded onto the left end of the protective frame 200. This causes the retaining ring 208 at the end of the hand-tightening bolt 207 to further tighten the clamping plate 206, ensuring that the protective frame 200 is tightly connected to the mounting frame 100, thus providing good protection for the light guide plate.

[0043] Supporting the protective frame 200: After the protective frame 200 is closed and fixed, the support plate 400 on the bottom left side of the mounting frame 100 will support the bottom of the protective frame 200, increase the stability of the protective frame 200, prevent the protective frame 200 from shaking or deforming due to gravity and other factors, and further protect the light guide plate.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hovering large-angle opening and closing protective cover for a light guide plate, characterized by, The utility model relates to a protective frame (200) and the installation frame (100) of the light guide plate are installed in the inside, the inner chamber of protective frame (200) fixedly installs the protection board (201), the right side end of protective frame (200) is connected and is installed to the right side front of installation frame (100) through the rotary connecting piece, the inside of the upper and lower sides of protective frame (200) is provided with the limiting connecting piece for connecting the rotary connecting piece to realize the hovering of protective frame (200), and the left side of protective frame (200) is provided with the fixed connecting piece for connecting installation frame (100).

2. The hoverable large-angle opening and closing protective cover for a light guide plate according to claim 1, characterized in that: The rotary connecting piece includes a plurality of fixed blocks (105) fixedly installed on the right side front of the installation frame (100), the plurality of fixed blocks (105) are arranged from bottom to top, a connecting rod (102) is fixedly installed between the plurality of fixed blocks (105), bearings (103) are sleeved on the upper and lower surfaces of the connecting rod (102), one side of the bearings (103) is fixedly installed on the right side end surface of the protective frame (200), and the opposite ends of the two bearings (103) are rotatably connected with limiting rings (104), and the two limiting rings (104) are fixedly sleeved on the surfaces of the connecting rod (102).

3. The hoverable large-angle opening and closing protective cover for a light guide plate according to claim 2, characterized in that: The limiting connecting piece includes a square slot (209) formed in the left side of the protective frame (200) and arranged along the height, a square plate (204) slidably connected in the square slot (209), abutting plates (202) fixedly connected to the upper and lower parts of the right side of the square plate (204), tooth rings (101) fixedly sleeved on the surface of the connecting plate and corresponding positions of each abutting plate (202), tooth grooves (205) formed in the right side end of the two abutting plates (202) and matched with the teeth of the tooth ring (101), the right side end of the two abutting plates (202) slidably penetrating the protective frame (200) and the tooth groove (205) formed in the end engaging the corresponding position tooth ring (101), and elastic pushing assemblies arranged in the upper and lower sides of the protective frame (200) to push the abutting plates (202) to the right side.

4. The hoverable large-angle opening and closing protective cover for a light guide plate according to claim 3, characterized in that: The elastic pushing assembly includes circular grooves (300) formed in the upper and lower sides of the protective frame (200), respectively, sliding rings (302) slidably connected in the inner cavities of the two circular grooves (300), the surfaces of the two sliding rings (302) fixedly sleeved on the corresponding abutting plates (202), springs (301) arranged on the right side inner walls of the two circular grooves (300), and the other ends of the two springs (301) respectively contacting the surfaces of the corresponding sliding rings (302).

5. The hoverable large-angle opening and closing protective cover for a light guide plate according to claim 4, characterized in that: The fixed connecting piece comprises a clamping plate (206) fixedly connected to the left end of the square plate (204) in the cavity of the square hole (203), the end of the clamping plate (206) penetrates the protection frame (200) to the left side and is installed on the side bend of the frame (100), and the left end of the protection frame (200) is provided with a slot (210) for inserting the bent end of the clamping plate (206).

6. The hoverable large-angle opening and closing protective cover for a light guide plate according to claim 5, characterized in that: The left end of the protection frame (200) is threadedly connected with a hand screw (207), the end of the hand screw (207) is sleeved with a fixing ring (208), and the fixing ring (208) is fixedly connected to the surface of the clamping plate (206).

7. The hoverable large-angle opening and closing protective cover for a light guide plate according to claim 6, characterized in that: The left bottom of the installation frame (100) is fixedly provided with a supporting plate (400), the front end of the supporting plate (400) extends forward, and the end of the supporting plate (400) extending forward contacts the bottom of the protection frame (200).

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