Liquid crystal display screen for explosion protection

Abstract

The application discloses an explosion-proof liquid crystal display screen and relates to the technical field of explosion-proof liquid crystal display screens.The explosion-proof liquid crystal display screen comprises a base, a supporting seat fixed on the top of the base, a screen hinged on the top of the supporting seat, an outer frame fixed on the outer wall of the screen, and a square frame slidingly connected to the inner wall of the outer frame.When the square frame is impacted from the front side, the square frame moves towards the outer frame, and the compression of the return spring drives the square frame to move the transmission rod, further drives the L-shaped plate and the large limiting rod to move away from the outer frame.When the large limiting rod is separated from the rotating rod, the rotating rod and the protection plate are rotated under the return action of the large torsional spring, so that the protection plate is counterclockwise rotated to be parallel to the screen.When the screen is impacted from the front side and is tilted backward, the protection plate shields the screen to prevent sparks caused by secondary damage.

Description

Technical Field

[0001] This invention relates to the field of explosion-proof liquid crystal display technology, specifically to an explosion-proof liquid crystal display. Background Technology

[0002] LCD screens, as core components for information display, human-computer interaction, and data visualization, are widely used in flammable and explosive hazardous workplaces such as petrochemical, mining, gas transmission, pharmaceutical processing, and military and aerospace industries. They are used to display real-time monitoring data, equipment operating status, alarm information, and operating instructions. In these environments, flammable gases, dust, vapors, and other explosive media are often present in the air. If electrical equipment generates electric sparks, arcs, or excessively high surface temperatures, it can easily lead to explosions, fires, and other major safety accidents. Therefore, the explosion-proof performance of the display screen is directly related to operational safety and stable equipment operation.

[0003] When existing LCD screens are used in flammable and explosive environments such as high-dust environments, the screen may generate a large number of sparks when it is hit, which may cause a dust explosion, posing a safety risk to personnel. In view of this, we propose an explosion-proof LCD screen. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an explosion-proof liquid crystal display screen, which solves the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an explosion-proof liquid crystal display screen, comprising: a base, wherein a support is fixed on the top of the base; The screen is hinged above the support base; The outer frame is fixed to the outer wall of the screen; A rectangular frame, which is slidably connected to the inner wall of the outer frame; A reset spring, one end of which is fixed to the outer frame, and the end of the reset spring away from the outer frame is fixedly connected to the square frame; A connecting plate, which is fixed to the top of the outer frame; A rotating rod, which passes through a connecting plate and is rotatably connected at the point of penetration; A protective plate is fixed to the outer wall of the rotating rod; A large torsion spring, the end of which is fixed to the side wall of the connecting plate, and the end of which is away from the connecting plate is fixedly connected to the side wall of the protective plate. A transmission rod, which passes through the outer frame and is slidably connected at the point of penetration, and the end of the transmission rod is fixedly connected to the inner side of the frame; The lower end of the L-shaped plate is fixed to the end of the transmission rod away from the frame; A large limit rod is fixed to the upper end of the L-shaped plate and slidably connected to the inner wall of the rotating rod. The large limit rod is used to limit the rotation of the rotating rod.

[0006] According to the above technical solution, a buffer spring is fixed to the front side of the outer frame, and a buffer plate is fixed to the end of the buffer spring away from the outer frame. The buffer plate is used to buffer the protective plate.

[0007] By setting up a square frame, a reset spring, a connecting plate, a rotating rod, a protective plate, a large torsion spring, a large limit rod, an L-shaped plate, and a transmission rod, when the square frame is hit by a collision from the front, the square frame moves towards the outer frame, and with the compression of the reset spring, the square frame drives the transmission rod to move, which in turn drives the L-shaped plate and the large limit rod to move away from the outer frame. When the large limit rod disengages from the rotating rod, the rotating rod and the protective plate rotate under the reset action of the large torsion spring, causing the protective plate to rotate counterclockwise until it is parallel to the screen.

[0008] According to the above technical solution, a support mechanism is provided on the rear side of the screen, and the support mechanism is used to support the screen.

[0009] According to the above technical solution, the support mechanism includes: a trigger plate, which is fixed on the side of the L-shaped plate away from the outer frame; A slot is formed in the side wall of the outer frame; A horizontal plate, the right end of which is slidably connected to the inner wall of the groove; The upper end of the small spring is fixed to the inner wall of the slot, and the lower end of the small spring is fixedly connected to the horizontal plate.

[0010] According to the above technical solution, an inclined plate is fixed above the horizontal plate, a hinge sleeve is fixed to the outer wall of the outer frame, a support rod is hinged to the outer wall of the central column of the hinge sleeve, a small limiting rod is fixed to the side of the horizontal plate near the support rod, the small limiting rod is slidably connected to the upper inner wall of the support rod, and the small limiting rod is used to limit the support rod.

[0011] According to the above technical solution, the inner wall of the hinge sleeve is fixed with the end of a small torsion spring, the end of the small torsion spring near the support rod is fixedly connected to the support rod, the side wall of the support rod is hinged with a long connecting rod, the upper end of the long connecting rod is hinged with a short connecting rod, the short connecting rod is hinged to the outer frame, and the long connecting rod and the short connecting rod are used to provide auxiliary support for the support rod.

[0012] By setting up a trigger plate, a ramp, a horizontal plate, a hinge sleeve, a small limit rod, a small torsion spring, a support rod, a small spring, and a slot, when the L-shaped plate drives the trigger plate to approach the ramp, the trigger plate moves along the ramp surface of the ramp, forcing the ramp and the horizontal plate to move upward. Accompanied by the compression of the small spring, the horizontal plate moves upward, driving the small limit rod to move upward. When the small limit rod disengages from the support rod, the support rod flips upward under the reset action of the small torsion spring. After the support rod flips, when it is impacted on the front side of the screen and tilts backward, the support rod supports the screen.

[0013] This invention provides an explosion-proof liquid crystal display screen. It has the following beneficial effects: 1. This invention comprises a square frame, a reset spring, a connecting plate, a rotating rod, a protective plate, a large torsion spring, a large limit rod, an L-shaped plate, and a transmission rod. When the square frame is impacted from the front, it moves towards the outer frame, accompanied by the compression of the reset spring. The square frame drives the transmission rod to move, further driving the L-shaped plate and the large limit rod to move away from the outer frame. When the large limit rod disengages from the rotating rod, the rotating rod and the protective plate rotate under the reset action of the large torsion spring, causing the protective plate to rotate counterclockwise until it is parallel to the screen. When the screen tilts backward after being impacted from the front, the protective plate acts as a shield to prevent secondary damage and sparks.

[0014] 2. By incorporating a buffer spring and a buffer plate, the protective plate contacts the buffer plate when it flips to be parallel to the screen, further compressing the buffer spring. This prevents the protective plate from damaging the screen during the flipping process, thus enhancing the screen protection function of the protective plate.

[0015] 3. This invention, by setting up a trigger plate, an inclined plate, a horizontal plate, a hinge sleeve, a small limit rod, a small torsion spring, a support rod, a small spring, and a slot, allows the trigger plate to move along the inclined surface of the inclined plate when the L-shaped plate moves it closer to the inclined plate. This forces the inclined plate and the horizontal plate to move upwards. Accompanied by the compression of the small spring, the horizontal plate moves upwards, causing the small limit rod to move upwards. When the small limit rod disengages from the support rod, the support rod flips upwards under the reset action of the small torsion spring. After the support rod flips, when it is impacted on the front side of the screen and tilts backwards, the support rod supports the screen, preventing damage to the circuit board on the back side of the screen and the generation of sparks.

[0016] 4. By setting up long and short connecting rods, when the support rod is flipped, the support rod drives the long and short connecting rods to unfold, which plays an auxiliary supporting role for the support rod, making the support rod support the screen more stably. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial structural diagram of the present invention; Figure 3 This is a partial structural diagram of the present invention; Figure 4 This is a schematic diagram of the support mechanism structure of the present invention; Figure 5 This is a cross-sectional structural diagram of the support mechanism of the present invention.

[0018] In the diagram: 1. Base; 2. Screen; 3. Support base; 4. Outer frame; 5. Square frame; 6. Reset spring; 7. Connecting plate; 8. Rotating rod; 9. Protective plate; 10. Large torsion spring; 11. Large limit rod; 12. L-shaped plate; 13. Transmission rod; 14. Buffer spring; 15. Buffer plate; 1601. Trigger plate; 1602. Inclined plate; 1603. Horizontal plate; 1604. Hinge sleeve; 1605. Small limit rod; 1606. Small torsion spring; 1607. Support rod; 1608. Small spring; 1609. Groove; 1610. Long connecting rod; 1611. Short connecting rod. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1-5 One embodiment of the present invention is: an explosion-proof liquid crystal display screen, comprising: a base 1, and a support base 3 fixed above the base 1; Screen 2 is hinged above support base 3; Outer frame 4, the outer frame 4 is fixed to the outer wall of screen 2; Frame 5 is slidably connected to the inner wall of the outer frame 4; The reset spring 6 has one end fixed to the outer frame 4, and the end of the reset spring 6 away from the outer frame 4 is fixedly connected to the square frame 5. Connecting plate 7 is fixed above the outer frame 4; Rotating rod 8 passes through connecting plate 7 and is rotatably connected at the point of penetration; Protective plate 9 is fixed to the outer wall of rotating rod 8; The large torsion spring 10 has its end fixed to the side wall of the connecting plate 7, and the end of the large torsion spring 10 away from the connecting plate 7 is fixedly connected to the side wall of the protective plate 9. The transmission rod 13 passes through the outer frame 4 and is slidably connected at the point of penetration. The end of the transmission rod 13 is fixedly connected to the inner side of the square frame 5. L-shaped plate 12, the lower end of L-shaped plate 12 is fixed to the end of transmission rod 13 away from the square frame 5; The upper limit rod 11 is fixed to the upper end of the L-shaped plate 12 and is slidably connected to the inner wall of the rotating rod 8. The upper limit rod 11 is used to limit the rotation rod 8.

[0021] A buffer spring 14 is fixed to the front side of the outer frame 4. A buffer plate 15 is fixed to the end of the buffer spring 14 away from the outer frame 4. The buffer plate 15 is used to buffer the protective plate 9.

[0022] By setting up a frame 5, a reset spring 6, a connecting plate 7, a rotating rod 8, a protective plate 9, a large torsion spring 10, a large limit rod 11, an L-shaped plate 12, and a transmission rod 13, the protection mechanism can be quickly activated when the screen 2 is subjected to external impact, effectively avoiding the risk of damage to the screen 2 and secondary damage.

[0023] When the frame 5 is subjected to an external force from the front, the protective plate 9 will directly and effectively shield and support the screen 2 under the impact of the impact force. It can block external debris or subsequent collisions from causing further impact on the screen 2, thereby preventing sparks from being generated due to secondary damage to the screen 2, ensuring the safety of the device operation, and avoiding various safety hazards caused by sparks. By setting up a buffer spring 14 and a buffer plate 15, when the protective plate 9 is flipped to be parallel to the screen 2 under the action of the large torsion spring 10, the protective plate 9 will first come into contact with the buffer plate 15 preset in front of the screen 2. As the protective plate 9 continues to flip, the buffer plate 15 will be subjected to the squeezing force of the protective plate 9, which will then push the buffer spring 14 to undergo compression deformation.

[0024] Under the elastic buffering effect of the buffer spring 14, the speed and impact force of the protective plate 9 when it flips can be effectively reduced, avoiding hard collision between the protective plate 9 and the screen 2, preventing the protective plate 9 from causing scratches, impacts and other damage to the surface of the screen 2, further enhancing the protective function of the protective plate 9 for the screen 2, ensuring that the screen 2 can be protected in all aspects and in multiple layers when subjected to external collisions, extending the service life of the screen 2, and ensuring the stable operation of the equipment.

[0025] In this embodiment, when the frame 5 is impacted by an external force from the front, it will translate towards the outer frame 4 under the impact force. Simultaneously, the return spring 6 connected to the frame 5 will be compressed and deformed, storing elastic potential energy to prepare for subsequent reset. During the movement of the frame 5, it will synchronously drive the transmission rod 13, which is fixedly connected to it, to move in the same direction. The transmission rod 13 further transmits power to the L-shaped plate 12, causing the L-shaped plate 12 and the large limit rod 11 connected to it to move synchronously away from the outer frame 4, thus unlocking the limit structure. As the large limit rod 11 gradually moves away from the limiting constraint of the rotating rod 8, the large torsion spring 10, which was originally under tension, will immediately release its elastic potential energy. Under the elastic restoring force of the large torsion spring 10, the rotating rod 8 will drive the protective plate 9, which is fixedly connected to it, to rotate together. Specifically, the protective plate 9 rotates counterclockwise around the axis of the rotating rod 8 until it rotates to a position parallel to the surface of the screen 2. At this time, the protective plate 9 is exactly in front of the screen 2, forming a protective barrier.

[0026] As the protective plate 9 flips to become parallel to the screen 2 under the action of the large torsion spring 10, it first contacts the buffer plate 15 positioned in front of the screen 2. As the protective plate 9 continues to flip, the buffer plate 15 is subjected to the squeezing force of the protective plate 9, which in turn pushes the buffer spring 14 to undergo compression deformation. Under the elastic buffering effect of the buffer spring 14, the speed and impact force of the protective plate 9 during flipping can be effectively reduced.

[0027] Please see Figures 1-5 Based on the above embodiments, in another embodiment of the present invention, a support mechanism is provided on the rear side of the screen 2, and the support mechanism is used to support the screen 2. The support mechanism includes: a trigger plate 1601, which is fixed to the side of the L-shaped plate 12 away from the outer frame 4; Groove 1609, groove 1609 is opened on the side wall of outer frame 4; The right end of the horizontal plate 1603 is slidably connected to the inner wall of the groove 1609; The upper end of the small spring 1608 is fixed to the inner wall of the slot 1609, and the lower end of the small spring 1608 is fixedly connected to the horizontal plate 1603.

[0028] An inclined plate 1602 is fixed above the horizontal plate 1603. A hinge sleeve 1604 is fixed to the outer wall of the outer frame 4. A support rod 1607 is hinged to the outer wall of the central column of the hinge sleeve 1604. A small limiting rod 1605 is fixed to the side of the horizontal plate 1603 near the support rod 1607. The small limiting rod 1605 is slidably connected to the upper inner wall of the support rod 1607. The small limiting rod 1605 is used to limit the support rod 1607.

[0029] The inner wall of the hinge sleeve 1604 is fixed with the end of a small torsion spring 1606. The end of the small torsion spring 1606 near the support rod 1607 is fixedly connected to the support rod 1607. A long connecting rod 1610 is hinged to the side wall of the support rod 1607. A short connecting rod 1611 is hinged to the upper end of the long connecting rod 1610. The short connecting rod 1611 is hinged to the outer frame 4. The long connecting rod 1610 and the short connecting rod 1611 are used to provide auxiliary support for the support rod 1607.

[0030] By setting up a trigger plate 1601, a slant plate 1602, a horizontal plate 1603, a hinge sleeve 1604, a small limit rod 1605, a small torsion spring 1606, a support rod 1607, a small spring 1608, and a slot 1609, when the front side of the screen 2 is subjected to an external collision and tilts backward, the support rod 1607 provides stable support for the screen 2, effectively preventing the screen 2 from continuing to tilt backward, avoiding damage to the circuit board on the rear side of the screen 2 from compression, collision, etc., thereby preventing sparks caused by circuit board damage, further ensuring the safe operation of the equipment, and avoiding various safety risks caused by sparks.

[0031] By setting up long connecting rod 1610 and short connecting rod 1611, when the support rod 1607 flips upward into place under the action of small torsion spring 1606, the rotation of the support rod 1607 will synchronously drive the long connecting rod 1610 and short connecting rod 1611 to move, so that the long connecting rod 1610 and short connecting rod 1611, which were originally in a folded state, gradually unfold. After unfolding, the long connecting rod 1610 and short connecting rod 1611 will form a stable support angle, which will effectively assist the support rod 1607 and further enhance the load-bearing capacity of the support rod 1607. This makes the support rod 1607 support the screen 2 more stable and reliable, and avoids the screen 2 from shifting or being damaged secondary due to unstable support of the support rod 1607.

[0032] In this embodiment, when the L-shaped plate 12 moves under the drive of the transmission mechanism, it will synchronously drive the trigger plate 1601 fixedly connected to it to move together, so that the trigger plate 1601 gradually moves closer to the inclined plate 1602. As the L-shaped plate 12 continues to move, the trigger plate 1601 will eventually come into contact with the inclined surface of the inclined plate 1602. During the process of the trigger plate 1601 moving along the inclined surface of the inclined plate 1602, it will generate an oblique pushing force on the inclined plate 1602. This pushing force forces the inclined plate 1602 to move upward along the slot 1609. The horizontal plate 1603 fixedly connected to the inclined plate 1602 will also move upward synchronously under the drive of the inclined plate 1602. During the upward movement of the horizontal plate 1603, it will exert a squeezing effect on the small spring 1608 connected to it, causing the small spring 1608 to undergo compression deformation, thereby storing elastic potential energy and providing power support for the subsequent reset action. Simultaneously, the upward movement of the horizontal plate 1603 will also drive the small limiting rod 1605 fixed above it to move upward as well, causing the small limiting rod 1605 to gradually break free from the limiting constraint on the support rod 1607. When the small limiting rod 1605 is completely free from the support rod 1607, the small torsion spring 1606, which was originally under tension, will quickly release its stored elastic potential energy. Under the elastic restoring force of the small torsion spring 1606, the support rod 1607 will rotate upward around the axis of the hinge sleeve 1604. When the front side of the screen 2 is subjected to an external impact and tilts backward, the support rod 1607 provides stable support for the screen 2, effectively preventing the screen 2 from continuing to tilt backward and avoiding damage to the circuit board on the rear side of the screen 2 from compression, collision, etc.

[0033] When the support rod 1607 flips upward into place under the action of the small torsion spring 1606, the rotation of the support rod 1607 will synchronously drive the long connecting rod 1610 and the short connecting rod 1611 to move, so that the long connecting rod 1610 and the short connecting rod 1611, which were originally in a folded state, gradually unfold. After unfolding, the long connecting rod 1610 and the short connecting rod 1611 will form a stable support angle, which will play an effective auxiliary support role for the support rod 1607.

[0034] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof liquid crystal display screen, characterized in that, include: A base (1) is provided, and a support seat (3) is fixed on the top of the base (1). Screen (2), which is hinged above the support base (3); Outer frame (4), the outer frame (4) is fixed to the outer wall of the screen (2); The square frame (5) is slidably connected to the inner wall of the outer frame (4); A reset spring (6) is provided, with one end of the reset spring (6) fixed to the outer frame (4) and the other end of the reset spring (6) away from the outer frame (4) fixedly connected to the square frame (5). Connecting plate (7), which is fixed above the outer frame (4); Rotating rod (8), the rotating rod (8) passes through the connecting plate (7) and is rotatably connected at the point of penetration; A protective plate (9) is fixed to the outer wall of the rotating rod (8); Large torsion spring (10), the end of which is fixed to the side wall of the connecting plate (7), and the end of which is away from the connecting plate (7) is fixedly connected to the side wall of the protective plate (9). The transmission rod (13) passes through the outer frame (4) and is slidably connected at the point of penetration. The end of the transmission rod (13) is fixedly connected to the inner side of the square frame (5). L-shaped plate (12), the lower end of which is fixed to the end of the transmission rod (13) away from the frame (5); The large limit rod (11) is fixed to the upper end of the L-shaped plate (12) and is slidably connected to the inner wall of the rotating rod (8). The large limit rod (11) is used to limit the rotating rod (8).

2. The explosion-proof liquid crystal display screen according to claim 1, characterized in that: A buffer spring (14) is fixed to the front side of the outer frame (4), and a buffer plate (15) is fixed to the end of the buffer spring (14) away from the outer frame (4). The buffer plate (15) is used to buffer the protective plate (9).

3. The explosion-proof liquid crystal display screen according to claim 2, characterized in that: A support mechanism is provided on the rear side of the screen (2), which is used to support the screen (2).

4. The explosion-proof liquid crystal display screen according to claim 3, characterized in that: The support mechanism includes: a trigger plate (1601), which is fixed to the side of the L-shaped plate (12) away from the outer frame (4); The slot (1609) is formed on the side wall of the outer frame (4); A horizontal plate (1603) is slidably connected at its right end to the inner wall of the slot (1609); The upper end of the small spring (1608) is fixed to the inner wall of the slot (1609), and the lower end of the small spring (1608) is fixedly connected to the horizontal plate (1603).

5. The explosion-proof liquid crystal display screen according to claim 4, characterized in that: An inclined plate (1602) is fixed above the horizontal plate (1603), and a hinge sleeve (1604) is fixed on the outer wall of the outer frame (4). A support rod (1607) is hinged to the outer wall of the central column of the hinge sleeve (1604).

6. The explosion-proof liquid crystal display screen according to claim 5, characterized in that: A small limiting rod (1605) is fixed on the side of the horizontal plate (1603) near the support rod (1607). The small limiting rod (1605) is slidably connected to the upper inner wall of the support rod (1607). The small limiting rod (1605) is used to limit the support rod (1607).

7. The explosion-proof liquid crystal display screen according to claim 6, characterized in that: The inner wall of the hinge sleeve (1604) is fixed with the end of a small torsion spring (1606), and the end of the small torsion spring (1606) near the support rod (1607) is fixedly connected to the support rod (1607).

8. The explosion-proof liquid crystal display screen according to claim 7, characterized in that: The side wall of the support rod (1607) is hinged with a long connecting rod (1610), and the upper end of the long connecting rod (1610) is hinged with a short connecting rod (1611). The short connecting rod (1611) is hinged to the outer frame (4). The long connecting rod (1610) and the short connecting rod (1611) are used to provide auxiliary support for the support rod (1607).

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