Liquid crystal display screen with screen protection function

Abstract

The utility model discloses a liquid crystal display screen with a screen protection function, and relates to the technical field of liquid crystal display screens. The screen comprises a support and a screen body arranged on the support, a fixing frame is detachably arranged on the support, a top frame and two side frames which are in abutting lap joint with the screen body are hinged to the fixing frame, a containing groove is formed in the top frame, a rotating rod is rotationally arranged in the containing groove, and a volute spring is arranged between the rotating rod and the containing groove. Dustproof cloth is wound on the rotating rod, a transverse rod is arranged in the containing groove in a sliding mode, the free end of the dustproof cloth is connected with the transverse rod, a sliding groove is formed in the side frame, and the transverse rod is in sliding fit with the sliding groove. When the screen body is not used for a long time, the protection space is formed through the top frame, the two side frames and the unfolded dustproof cloth, the screen body is located in the protection space, the protection function on the screen body is achieved, dust is prevented from being attached to the screen body when the screen body is not used for a long time, the definition is guaranteed, and therefore the screen has higher practicability.

Description

Technical Field

[0001] The present application relates to the technical field of liquid crystal display screens, and in particular to a liquid crystal display screen with a screen protection function. Background Art

[0002] Liquid crystal display, or liquid crystal display, is an active matrix liquid crystal display driven by thin film transistors. It mainly uses electric current to stimulate liquid crystal molecules to produce points, lines, and surfaces that cooperate with the back light tubes to form a picture. The working principle of the liquid crystal display is that under the action of an electric field, the arrangement direction of liquid crystal molecules changes, the transmittance of the external light source changes, and the electro-optical conversion is completed. The liquid crystal display screen is usually composed of a bracket and a screen body set on the bracket. When not used for a long time, dust will adhere to the screen body, affecting the clarity. Therefore, a liquid crystal display screen with a screen protection function is proposed. Utility Model Content

[0003] The purpose of this application is to solve the technical problem that dust will adhere to the screen body and affect the clarity when not in use for a long time. This application provides a liquid crystal display with a screen protection function.

[0004] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0005] A liquid crystal display screen with a screen protection function comprises a bracket and a screen body arranged thereon, the bracket is detachably provided with a fixing frame, the fixing frame is hinged with a top frame and two side frames which are both in contact with and overlapped with the screen body, the top frame is provided with a receiving groove, a rotating rod is rotatably provided in the receiving groove and a spiral spring is provided between the two, a dustproof cloth is wound on the rotating rod, a cross bar is slidably provided in the receiving groove, the free end of the dustproof cloth is connected to the cross bar, a sliding groove is configured on the side frame, the cross bar and the sliding groove are slidably matched, and locking pieces are provided on the cross bar and the side frames, the locking pieces act on the cross bar and lock or unlock it.

[0006] Furthermore, the fixing frame is provided with a connection frame which is in a U-shape and overlaps with the bracket, and the connection frame is provided with a connection plate which overlaps with the bracket through bolts.

[0007] Furthermore, the hinge shaft of the top frame and the hinge shaft of the side frame are transmission connected via a bevel gear assembly.

[0008] Furthermore, the locking member includes a fixing column arranged on the cross bar, a hemispherical block is arranged at the free end of the fixing column, a positioning hole connected to the slide groove is opened on the side frame, the hemispherical block is plugged into the positioning hole, and an elastic member is slidably arranged on the side frame to contact and overlap with the hemispherical block.

[0009] Furthermore, the elastic member comprises a slide rod slidably arranged on the side frame, a wedge block which overlaps with the hemispherical block is arranged at the free end of the slide rod, and a return spring sleeved on the slide rod is arranged between the wedge block and the side frame.

[0010] Furthermore, a cover plate corresponding to the accommodating groove and sealing or unblocking the accommodating groove is hingedly connected to the top frame, the cover plate and the top frame are fixed by bolts, two shaft rods are rotatably arranged in the accommodating groove, a spiral spring is arranged between the shaft rods and the accommodating groove, the two ends of the rotating rod are respectively detachably connected to the two shaft rods, and the free end of the dustproof cloth is detachably connected to the cross bar.

[0011] Furthermore, a groove is provided on the shaft rod, and both ends of the rotating rod are provided with protrusions which are plugged into and fit with the groove, and the protrusions are fixed to the shaft rod by bolts.

[0012] Furthermore, a positioning groove is provided on the cross bar, a plurality of through holes are provided on the free end of the dustproof cloth, and bolts are threadedly provided on the cross bar, the number of which is the same as the number of the through holes and which are plug-fitted in a one-to-one correspondence.

[0013] The beneficial effects of the present application are as follows: when the screen main body of the present application is not used for a long time, a protective space is formed together by the top frame, two side frames and the unfolded dustproof cloth. The screen main body is located in the protective space, which plays a protective function for the screen main body, thereby preventing dust from adhering to the screen main body when not used for a long time, ensuring clarity, and therefore more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the structure of this application;

[0015] Figure 2 It is a three-dimensional diagram of the structure of part of this application;

[0016] Figure 3 It is a three-dimensional diagram of the structure of part of this application;

[0017] Figure 4 It is a three-dimensional diagram of the top frame structure of this application;

[0018] Figure 5 This application Figure 4 A three-dimensional cross-sectional view of

[0019] Figure 6 This application Figure 5 The enlarged view of point A in the middle;

[0020] Figure 7 This application Figure 5 The enlarged view of point B in the middle;

[0021] Figure 8 It is a three-dimensional diagram of the side frame structure of this application;

[0022] Fig. 9 This application Figure 8 A three-dimensional cross-sectional view of

[0023] Fig.10 This application Fig. 9 Enlarged view of point C in the middle;

[0024] Fig.11 It is an exploded perspective view of some structures of this application;

[0025] Fig.12 This application Fig.11 Enlarged view of point D in the middle.

[0026] Figure numerals: 1. bracket; 2. screen body; 3. fixing frame; 4. top frame; 5. side frame; 6. receiving groove; 7. rotating rod; 8. spiral spring; 9. dustproof cloth; 10. cross bar; 11. slide groove; 12. connecting frame; 13. connecting plate; 14. bevel gear assembly; 15. fixing column; 16. hemispherical block; 17. positioning hole; 18. sliding rod; 19. wedge block; 20. reset spring; 21. cover plate; 22. shaft rod; 23. groove; 24. protrusion; 25. positioning groove; 26. through hole. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0028] like Figure 1-Figure 12 As shown, an embodiment of the present application provides a liquid crystal display screen with a screen protection function, comprising a bracket 1 and a screen body 2 arranged thereon, the screen body 2 is in a vertical direction and fixed on the bracket 1, a fixing frame 3 is detachably arranged on the bracket 1, the fixing frame 3 is in a vertical direction and is in contact with and overlapped with the screen body 2, a top frame 4 and two side frames 5 are hingedly connected to the fixing frame 3, both of which are in contact with and overlapped with the screen body 2, the top frame 4 is in a horizontal direction, the two side frames 5 are in a vertical direction and are symmetrically distributed, and a receiving groove 6 is constructed on the top frame 4 to receive A rotating rod 7 is rotatably arranged in the groove 6 and a spiral spring 8 is arranged between the two. The rotating rod 7 is in a horizontal direction. A dustproof cloth 9 is wound on the rotating rod 7. A cross bar 10 is slidably arranged in the accommodating groove 6. The cross bar 10 is in a horizontal direction and slides in a vertical direction. The free end of the dustproof cloth 9 is connected to the cross bar 10. A sliding groove 11 is constructed on the side frame 5. The sliding groove 11 is distributed along the length direction of the side frame 5. The cross bar 10 and the sliding groove 11 are slidably matched. A locking piece is arranged on the cross bar 10 and the side frame 5. The locking piece acts on the cross bar 10 and locks or unlocks it.

[0029] In the initial state, the fixing frame 3 is not installed, the top frame 4 and the two side frames 5 are in the initial positions, the cross bar 10 is in the initial position and is located in the receiving groove 6, and the spiral spring 8 is in a natural state. During installation, the fixing frame 3 is installed on the bracket 1 in a vertical direction, and the fixing frame 3 is in contact with and overlaps with the screen main body 2. The screen main body 2 completely blocks the two side frames 5 and partially blocks the top frame 4. When the screen main body 2 is in use, it will not excessively affect the viewing experience. When the screen main body 2 is not used for a long time, the top frame 4 is driven to rotate to the extreme position and in contact with and overlap the screen main body 2, and the two side frames 5 are driven to rotate to the extreme position and in contact with and overlap the screen main body 2. The top frame 4 and the two side frames 5 are in contact with and overlap and form a door-shaped structure. The receiving groove 6 is connected to the two slide grooves 11, driving the cross bar 10 to slide downward to the extreme position. During this process, the cross bar 10 enters the two slide grooves 1 from the receiving groove 6. 1, the dustproof cloth 9 is driven to move by the cross bar 10, the rotating rod 7 is reversed and the dustproof cloth 9 is loosened, the spiral spring 8 is squeezed, and then the cross bar 10 is locked by the locking piece, the spiral spring 8 cannot be reset to the natural state, and the cross bar 10 cannot slide to the initial position. At this time, a protective space is formed by the top frame 4, the two side frames 5 and the unfolded dustproof cloth 9. The screen body 2 is located in the protective space, which plays a protective function for the screen body 2, thereby preventing the screen body 2 from being attached to dust when it is not used for a long time and ensuring clarity. On the contrary, when the screen body 2 needs to be used, the cross bar 10 is unlocked by the locking piece, the spiral spring 8 is reset to the natural state, the cross bar 10 slides to the initial position, the rotating rod 7 rotates forward and reels the dustproof cloth 9, and then drives the top frame 4 to rotate to the initial position, drives the two side frames 5 to rotate to the initial position, and the top frame 4 and the two side frames 5 are both in contact and overlapped;

[0030] To sum up, when the screen main body 2 of the present application is not used for a long time, a protective space is formed together by the top frame 4, the two side frames 5 and the unfolded dustproof cloth 9. The screen main body 2 is located in the protective space, which plays a protective function for the screen main body 2, thereby preventing dust from accumulating on the screen main body 2 when it is not used for a long time, ensuring clarity, and therefore more practical.

[0031] like Figure 2 As shown, in some embodiments, a U-shaped connecting frame 12 is provided on the fixing frame 3 and overlaps with the bracket 1. The connecting frame 12 is fixed on the fixing frame 3, and a connecting plate 13 overlaps with the bracket 1 is provided on the connecting frame 12 by bolts;

[0032] Referring to the above, during installation, the connecting frame 12 is overlapped with the bracket 1, the fixing frame 3 is overlapped with the screen body 2, the connecting plate 13 is set on the connecting frame 12 by bolts, the connecting plate 13 is overlapped with the bracket 1, and the installation of the fixing frame 3 is achieved through the cooperation of the connecting frame 12 and the connecting plate 13.

[0033] like Figure 3 As shown, in some embodiments, the hinge shaft of the top frame 4 and the hinge shaft of the side frame 5 are connected by a bevel gear assembly 14, and the bevel gear assembly 14 includes two meshing bevel gears, and the two bevel gears are respectively fixed on the hinge shaft of the top frame 4 and the hinge shaft of the side frame 5;

[0034] Referring to the above, when the top frame 4 rotates, the side frames 5 are driven to rotate together through the bevel gear assembly 14. When the side frames 5 rotate, the top frame 4 is driven to rotate together through the bevel gear assembly 14, so that the top frame 4 and the two side frames 5 rotate together, which is more convenient to use.

[0035] like Figure 7-Figure 10 As shown, in some embodiments, the locking member includes a fixing column 15 arranged on the crossbar 10, the fixing column 15 is fixed on the crossbar 10 and is vertically distributed therewith, a hemispherical block 16 is arranged at the free end of the fixing column 15, the hemispherical block 16 is fixed at the free end of the fixing column 15 and the two form a step-like structure, a positioning hole 17 connected to the slide groove 11 is opened on the side frame 5, the positioning hole 17 is opened in the vertical direction, the hemispherical block 16 is plugged and matched with the positioning hole 17, and an elastic member that contacts and overlaps with the hemispherical block 16 is slidably arranged on the side frame 5, and the elastic member slides in the horizontal direction;

[0036] Referring to the above, in the initial state, the elastic member is located at the initial position and is in a natural state. When the cross bar 10 slides to the extreme position, it drives the fixing column 15 and the hemispherical block 16 to move together and both pass through the positioning hole 17. In this process, the hemispherical block 16 forces the elastic member to slide to the extreme position and be squeezed first, and then the elastic member is reset to the natural state and slides to the initial position. The elastic member and the hemispherical block 16 are in contact and overlapped. Due to the obstruction of the elastic member, the cross bar 10 cannot slide to the initial position to lock the cross bar 10. On the contrary, the elastic member is driven to slide to the extreme position and is squeezed. Due to the loss of the obstruction of the elastic member, the cross bar 10 is able to slide to the initial position to unlock the cross bar 10. Then the elastic member is released, and the elastic member is reset to the natural state and slides to the initial position.

[0037] like Fig.10 As shown, in some embodiments, the elastic member includes a slide bar 18 slidably arranged on the side frame 5, the slide bar 18 slides in the horizontal direction, and the free end of the slide bar 18 is provided with a wedge block 19 that contacts and overlaps with the hemispherical block 16, the wedge block 19 is horizontally oriented and fixedly arranged on the free end of the slide bar 18, and a return spring 20 sleeved on the slide bar 18 is arranged between the wedge block 19 and the side frame 5, the return spring 20 is horizontally oriented and the two ends are respectively fixedly connected to the wedge block 19 and the side frame 5;

[0038] Referring to the above, in the initial state, the slide bar 18 and the wedge block 19 are both in the initial position, and the return spring 20 is in the natural state. When the cross bar 10 slides to the limit position, it drives the fixed column 15 and the hemispherical block 16 to move together and pass through the positioning hole 17. In this process, the hemispherical block 16 first contacts and overlaps with the inclined surface of the wedge block 19. Through the transition effect of the inclined surface, the wedge block 19 is forced to move to the limit position together with the slide bar 18, and the return spring 20 is squeezed. Then the return spring 20 is reset to the natural state, and the wedge block 1 9 moves to the initial position together with the slide bar 18, the wedge block 19 contacts and overlaps with the hemispherical block 16. Due to the obstruction of the wedge block 19, the cross bar 10 cannot slide to the initial position. On the contrary, the slide bar 18 is driven to slide to the limit position, driving the wedge block 19 to move to the limit position together, the return spring 20 is squeezed, and due to the loss of the obstruction of the wedge block 19, the cross bar 10 can slide to the initial position, and then the slide bar 18 is released, the return spring 20 returns to the natural state, and the wedge block 19 and the slide bar 18 move to the initial position together.

[0039] like Figure 5-Figure 12 As shown, in some embodiments, a cover plate 21 corresponding to the receiving groove 6 and blocking or unblocking the receiving groove 6 is hinged on the top frame 4, and the cover plate 21 is fixed to the top frame 4 by bolts, and two shafts 22 are rotatably arranged in the receiving groove 6, and the two shafts 22 are both horizontal and symmetrically distributed, and the spiral spring 8 is arranged between the shaft 22 and the receiving groove 6, and the two ends of the rotating rod 7 are detachably connected to the two shafts 22, and the free end of the dustproof cloth 9 is detachably connected to the cross bar 10;

[0040] Referring to the above, in the initial state, the cover plate 21 blocks the receiving groove 6, the two ends of the rotating rod 7 are respectively connected to the two shaft rods 22, and the free end of the dustproof cloth 9 is connected to the cross bar 10. When the dustproof cloth 9 is damaged, the bolts are loosened to rotate the cover plate 21 and unblock the receiving groove 6, the free end of the dustproof cloth 9 is removed from the cross bar 10, and the two ends of the rotating rod 7 are respectively removed from the two shaft rods 22, so that the rotating rod 7 and the dustproof cloth 9 can be taken out from the receiving groove 6 to facilitate the replacement of the damaged dustproof cloth 9. Conversely, the rotating rod 7 and the dustproof cloth 9 are placed in the receiving groove 6, the two ends of the rotating rod 7 are respectively connected to the two shaft rods 22, the free end of the dustproof cloth 9 is connected to the cross bar 10, and then the cover plate 21 is rotated to block the receiving groove 6, and the cover plate 21 is fixed to the top frame 4 by bolts for subsequent use.

[0041] like Figure 6 As shown, in some embodiments, a groove 23 is provided on the shaft 22, and both ends of the rotating rod 7 are provided with a protrusion 24 that is plugged into the groove 23, and the protrusion 24 is fixedly connected to the rotating rod 7, and the protrusion 24 is fixed to the shaft 22 by bolts;

[0042] Referring to the above, in the initial state, the protrusion 24 is completely located in the groove 23, the protrusion 24 and the shaft 22 are fixed by bolts, and the rotating rod 7 is connected to the shaft 22. When the rotating rod 7 and the shaft 22 are disassembled, the bolts are loosened to allow the protrusion 24 to withdraw from the groove 23. Conversely, the protrusion 24 is completely inserted into the groove 23, and the protrusion 24 and the shaft 22 are fixed by bolts, so that the rotating rod 7 and the shaft 22 can be connected.

[0043] like Fig.12 As shown, in some embodiments, a positioning groove 25 is provided on the cross bar 10, a plurality of through holes 26 are provided at the free end of the dustproof cloth 9, and bolts having the same number as the through holes 26 and correspondingly plugged in one by one are provided on the cross bar 10;

[0044] Referring to the above, in the initial state, the free end of the dustproof cloth 9 is located in the positioning groove 25, the bolt is plugged into the through hole 26 and tightened on the cross bar 10, and the free end of the dustproof cloth 9 cannot be separated from the cross bar 10, that is, the free end of the dustproof cloth 9 is connected to the cross bar 10. When the free end of the dustproof cloth 9 is disassembled from the cross bar 10, the bolt is loosened until it exits the through hole 26, and the free end of the dustproof cloth 9 is able to exit the positioning groove 25. Conversely, the free end of the dustproof cloth 9 is located in the positioning groove 25, the bolt is plugged into the through hole 26 and tightened on the cross bar 10, that is, the free end of the dustproof cloth 9 is connected to the cross bar 10.

[0045] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A liquid crystal display screen with a screen protection function, comprising a bracket (1) and a screen body (2) arranged thereon, characterized in that: The bracket (1) is detachably provided with a fixing frame (3), and the fixing frame (3) is hinged with a top frame (4) and two side frames (5) which are both in contact with and overlapped with the screen body (2). The top frame (4) is provided with a receiving groove (6), a rotating rod (7) is rotatably provided in the receiving groove (6), and a spiral spring (8) is provided between the two, a dustproof cloth (9) is wound on the rotating rod (7), a cross bar (10) is slidably provided in the receiving groove (6), and the free end of the dustproof cloth (9) is connected to the cross bar (10), and a sliding groove (11) is constructed on the side frame (5), and the cross bar (10) and the sliding groove (11) are slidably matched, and a locking member is provided on the cross bar (10) and the side frame (5), and the locking member acts on the cross bar (10) and locks or unlocks it.

2. The liquid crystal display screen with screen protection function according to claim 1, characterized in that: The fixing frame (3) is provided with a connection frame (12) having a U-shaped structure and being in contact with and overlapping the bracket (1); the connection frame (12) is provided with a connection plate (13) in contact with and overlapping the bracket (1) via bolts.

3. The liquid crystal display screen with screen protection function according to claim 1, characterized in that: The hinge shaft of the top frame (4) and the hinge shaft of the side frame (5) are transmission-connected via a bevel gear assembly (14).

4. The liquid crystal display screen with screen protection function according to claim 1, characterized in that: The locking member comprises a fixing column (15) arranged on the crossbar (10), a hemispherical block (16) being arranged at a free end of the fixing column (15), a positioning hole (17) communicating with the slide groove (11) being provided on the side frame (5), the hemispherical block (16) being plugged into and matched with the positioning hole (17), and an elastic member being slidably arranged on the side frame (5) and contacting and overlapping with the hemispherical block (16).

5. The liquid crystal display screen with screen protection function according to claim 4, characterized in that: The elastic member comprises a slide rod (18) slidably arranged on the side frame (5); a wedge block (19) is arranged at the free end of the slide rod (18) and is in contact with and overlapped with the hemispherical block (16); and a return spring (20) sleeved on the slide rod (18) is arranged between the wedge block (19) and the side frame (5).

6. The liquid crystal display screen with screen protection function according to claim 1, characterized in that: A cover plate (21) corresponding to the receiving groove (6) and sealing or unsealing the receiving groove (6) is hingedly connected to the top frame (4); the cover plate (21) and the top frame (4) are fixed by bolts; two shafts (22) are rotatably arranged in the receiving groove (6); a spiral spring (8) is arranged between the shafts (22) and the receiving groove (6); the two ends of the rotating rod (7) are respectively detachably connected to the two shafts (22); and the free end of the dustproof cloth (9) is detachably connected to the cross bar (10).

7. The liquid crystal display screen with screen protection function according to claim 6, characterized in that: The shaft rod (22) is provided with a groove (23), and both ends of the rotating rod (7) are provided with protrusions (24) that are plugged into and fit with the grooves (23), and the protrusions (24) are fixed to the shaft rod (22) by bolts.

8. The liquid crystal display screen with screen protection function according to claim 6, characterized in that: The cross bar (10) is provided with a positioning groove (25), the free end of the dustproof cloth (9) is provided with a plurality of through holes (26), and the cross bar (10) is threadedly provided with bolts having the same number as the through holes (26) and correspondingly plugged in one by one.

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