A workshop security emergency lighting device

Abstract

This invention relates to the technical field of lighting devices, and in particular to a safety emergency lighting device for workshops, comprising a light box, which is fixed by embedding in a wall, installing on a wall surface, or hanging on a ceiling, with the opening of the light box facing the area to be illuminated; a lighting lamp, which is set inside the light box and used to illuminate outward through the opening of the light box; and a backup power supply, which is set inside the light box and used to provide energy to the lighting lamp; by storing the lighting lamp inside the light box when not in use, and sealing the opening of the light box with two lids, the lighting lamp can be easily isolated and protected, avoiding damage to the lighting lamp caused by workshop production activities, thus extending its service life. It also prevents dust and impurities from accumulating on the lighting lamp, thereby affecting its light transmittance, and allows the lighting lamp to be ready for emergency work for an extended period of time.

Description

Technical Field

[0001] This invention relates to the technical field of lighting devices, and in particular to a safety emergency lighting device for workshops. Background Technology

[0002] Emergency lighting devices are lighting equipment that can automatically switch to backup power and start lighting when normal lighting power fails, in order to ensure personnel evacuation, safe operation and emergency response. In the workshop production environment, emergency lighting devices are usually fixedly installed on the surface of walls or columns as long-term safety facilities, and their reliability is directly related to production safety.

[0003] Currently, most existing emergency lighting devices are installed directly in the open, meaning the lamp housing and light-transmitting cover are directly exposed to the workshop environment. Since workshops generally contain suspended particulate matter such as dust and oil mist, and have poor air circulation, emergency lighting devices remain stationary for extended periods when not in operation. As a result, dust, oil, and other pollutants easily accumulate on their light-transmitting surfaces, leading to a decrease in light transmittance. This, in turn, affects the illuminance level and visibility range in emergency situations. Furthermore, since workshops are often accompanied by production operations such as equipment movement, material hoisting, and tool turnover, there is a risk of collision and impact on the lighting devices. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a safety emergency lighting device for workshops, the specific technical solution of which is as follows: An emergency lighting device for workshop use according to the present invention includes: The light box is fixed by embedding it in the wall, installing it on the wall, or hanging it on the ceiling, with the opening of the light box facing the area to be illuminated; A lighting fixture is installed inside the light box and is used to illuminate the outside through the opening of the light box; A backup power supply is provided inside the lamp box and is used to provide energy for the lighting lamp; Two lids are positioned opposite each other at the opening of the light box, and the lighting lamp is turned on or off synchronously with the lids.

[0005] Furthermore, a partition is provided inside the lamp box, which isolates the backup power supply in an independent space, and the lighting lamp is disposed on the partition.

[0006] Furthermore, the partition is movable inside the light box in a direction perpendicular to the opening of the light box, and when the lighting is turned on, the partition moves toward the opening of the light box.

[0007] Furthermore, the lamp box is equipped with a detection unit and an electromagnetic actuator. When the detection unit detects that the external circuit is de-energized, the backup power supply powers the electromagnetic actuator and causes the electromagnetic actuator to move the partition.

[0008] Furthermore, the detection unit includes an electromagnet and a permanent magnet that are connected to each other, and two wires connected to an external circuit are provided on the electromagnet; The inner wall of the lamp box is provided with a conductive plate 1, a conductive plate 2 and a magnetic plate. The conductive plate 2 and the magnetic plate are fixedly disposed relative to each other, and the magnetic plate can move in the lamp box along the direction of approaching or moving away from the docking position of the electromagnet and the permanent magnet. The magnetic plate is connected to the lamp box through an elastic body 1. When the electromagnet is energized, the magnetic field at the docking position between the electromagnet and the permanent magnet disappears. When the electromagnet is de-energized, the magnetic field around the end of the permanent magnet at the docking position between the electromagnet and the permanent magnet generates an attractive force on the magnetic conductive plate, causing the first conductive plate to contact the second conductive plate, and the electromagnetic actuator is electrically connected to the backup power supply.

[0009] Furthermore, the lighting device also includes two conductive contacts arranged opposite to each other. The two conductive contacts are respectively disposed on the inner wall of the lamp box and the partition. After the partition moves a predetermined distance, the two conductive contacts come into contact with each other, so that the backup power supply is electrically connected to the lighting lamp.

[0010] Furthermore, each of the box covers is provided with a push group, which pushes the box cover to open or close when the partition moves.

[0011] Furthermore, the pushing assembly includes a slider and a rotating wheel. The slider's movement trajectory on the inner wall of the light box is parallel to the movement trajectory of the partition, and the rotating wheel is rotatably mounted on the slider. The slider is connected to the box cover by a support arm 1 and a support arm 2 that are rotatably connected to each other. The wheel is connected to the box cover by a push-pull arm 1 and a push-pull arm 2 that are rotatably connected to each other, and the push-pull arm 2 is rotatably mounted on the box cover.

[0012] Furthermore, the pushing assembly also includes a fixed plate and a movable plate arranged collinearly along the moving direction of the slider. The fixed plate is fixed to the inner wall of the light box, and the movable plate can move on the fixed plate through a guide post. The moving trajectory of the movable plate is parallel to the moving trajectory of the slider. The fixed plate and the movable plate are connected by an elastic body. A stop is provided on the side wall of the movable slat to block the rotating wheel, and the rotating wheel can roll on the fixed slat or the movable slat; The partition plate and the rotating wheel are connected by a connecting rod.

[0013] The beneficial effects of this invention are as follows: By storing the lighting fixtures inside the light box when not in use and sealing the opening of the light box with two lids, the lighting fixtures can be isolated and protected, preventing damage from bumps and knocks during workshop production activities, thus extending their service life. At the same time, it prevents dust and impurities from accumulating on the lighting fixtures, which would affect their light transmittance, allowing the lighting fixtures to be ready for emergency work for an extended period of time. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a structural schematic diagram of a security emergency lighting device for a workshop. Figure 2 for Figure 1 Schematic diagram of cross-section structure; Figure 3 for Figure 2 A magnified view of the structure at point A in the middle; Figure 4 for Figure 2 A schematic diagram of the structure of the push assembly and the lid; Figure label: 1. Lamp box; 2. Lighting lamp; 3. Backup power supply; 4. Box cover; 5. Partition; 6. Electromagnetic actuator; 7. Electromagnet; 8. Permanent magnet; 9. Wire; 10. Conductive plate one; 11. Conductive plate two; 12. Magnetic plate; 13. Elastic body one; 14. Conductive contact; 15. Pushing assembly; 16. Slider; 17. Rotary wheel; 18. Support arm one; 19. Support arm two; 20. Push-pull arm one; 21. Push-pull arm two; 22. Fixed strip; 23. Movable strip; 24. Guide post; 25. Elastic body two; 26. Edge; 27. Connecting rod. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0017] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0018] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. This embodiment is written in a progressive manner.

[0019] like Figures 1 to 4 As shown, a workshop safety emergency lighting device of the present invention includes: Light box 1 is fixed by embedding it in the wall, installing it on the wall, or hanging it on the ceiling, with the opening of light box 1 facing the area to be illuminated; Lighting lamp 2 is installed inside the light box 1 and is used to provide illumination to the outside through the opening of the light box 1; Backup power supply 3 is installed inside the lamp box 1 and is used to provide energy for the lighting lamp 2; Two lids 4 are positioned opposite each other at the opening of the light box 1, and the lighting lamp 2 is turned on or off synchronously with the lids 4.

[0020] In this invention, the light box 1 provides installation and protection space for the lighting lamp 2 and the backup power supply 3. Depending on the lighting location, the light box 1 can be installed inside the wall, mounted on the wall, or directly hung on the ceiling. This makes it easy for the lighting device to meet various installation needs and installation forms, improving its ease of use. The shape of the light box 1 can be changed according to its installation location requirements, installation space requirements, etc. For example, when the light box 1 is installed on the ceiling, the shape of the light box 1 can be set as a disc or a cylinder to give it a larger illumination area. When the light box 1 is installed in a corridor, the light box 1 can be in the shape of a cuboid and the installation position of the light box 1 can be close to the ground to provide lighting and guidance for the worker evacuation path.

[0021] The two lids 4 are located at the opening of the lamp box 1 and can completely seal the opening of the lamp box 1. In this way, when not in use, the two lids 4 and the lamp box 1 form a sealed space to isolate and protect the lighting lamp 2 and the backup power supply 3 inside, so as to prevent workshop dust from affecting the illumination of the lighting lamp 2, or the lighting lamp 2 and the backup power supply 3 from being bumped and damaged by workshop production activities. In order to improve the flatness of the opening of the lamp box 1 and the lids 4, as well as the sealing strength of the lids 4 to the opening of the lamp box 1, a step can be set at the opening of the lamp box 1, so that both lids 4 are located within the step. In this way, the step supports the lids 4, thereby effectively improving the impact resistance of the lids 4.

[0022] In practical use, to avoid the cover 4 taking up space when opened, the opening angle of the cover 4 can be increased so that the cover 4 fits snugly against the wall. However, if the lighting device is suspended or installed at a high position, the opening angle of the cover 4 can be unrestricted. In order to increase the illumination area, without restricting the opening angle of the cover 4, a reflective film can be applied to the surface of the cover 4. The reflective film reflects and scatters the light emitted by the lighting lamp 2, so that the light can cover a larger area.

[0023] By storing the lighting lamp 2 inside the lamp box 1 when not in use and sealing the opening of the lamp box 1 with two lids 4, the lighting lamp 2 can be isolated and protected, avoiding damage from bumps and knocks during workshop production activities, thus extending its service life. At the same time, it prevents dust and impurities from accumulating on the lighting lamp 2, which would affect its light transmittance, allowing the lighting lamp 2 to be ready for emergency work for a long time.

[0024] Furthermore, a partition 5 is provided inside the light box 1, which isolates the backup power supply 3 in an independent space, and the lighting lamp 2 is installed on the partition 5.

[0025] like Figure 2 As shown, the partition 5 divides the internal space of the lamp box 1 into two independent chambers. One independent chamber is used to install the backup power supply 3, and the other independent chamber is used to install the lighting lamp 2. The independent chamber corresponds to the opening of the lamp box 1, so that the backup power supply 3 can be independently protected. In some embodiments, since the backup power supply 3 generates heat when it is working, heat dissipation holes connected to the corresponding independent chambers can be opened on the lamp box 1. Due to the obstruction of the partition 5, the heat will not be transferred to the independent chamber where the lighting lamp 2 is located.

[0026] Furthermore, the partition 5 is moved within the light box 1 in a direction perpendicular to the opening of the light box 1, and when the lighting lamp 2 is turned on, the partition 5 moves toward the opening of the light box 1.

[0027] When the light 2 is not in use, both the light 2 and the partition 5 are located inside the light box 1 away from the opening of the light box 1. This creates a buffer zone between the light 2 and the cover 4, which can protect the light 2 if the cover 4 is damaged by an impact. When emergency lighting is needed, the cover 4 is opened, and the light 2 and the partition 5 move toward the opening of the light box 1, thereby allowing the light 2 to illuminate a larger area.

[0028] Furthermore, the lamp box 1 is equipped with a detection unit and an electromagnetic actuator 6. When the detection unit detects that the external circuit is de-energized, the backup power supply 3 supplies power to the electromagnetic actuator 6 and causes the electromagnetic actuator 6 to push the partition 5 to move.

[0029] The electromagnetic actuator 6 can be installed in any independent chamber on both sides of the partition 5, and the movable end of the electromagnetic actuator 6 is connected to the partition 5. When the external circuit is powered normally, the backup power supply 3 is disconnected from the electromagnetic actuator 6. When the detection unit detects that the external circuit is de-energized, the backup power supply 3 is electrically connected to the electromagnetic actuator 6, and the backup power supply 3 provides power to the electromagnetic actuator 6, so that the electromagnetic actuator 6 drives the partition 5 and the lighting lamp 2 to move. The lighting lamp 2 moves toward the opening of the lamp box 1 and illuminates the outside of the lamp box 1.

[0030] Furthermore, the detection unit includes an electromagnet 7 and a permanent magnet 8 that are connected to each other, and two wires 9 connected to an external circuit are provided on the electromagnet 7; The inner wall of the lamp box 1 is provided with a conductive plate 10, a conductive plate 11 and a magnetic plate 12. The conductive plate 11 and the magnetic plate 12 are fixedly arranged relative to each other, and the magnetic plate 12 can move in the lamp box 1 along the direction of approaching or moving away from the docking position of the electromagnet 7 and the permanent magnet 8. The magnetic plate 12 is connected to the lamp box 1 through an elastic body 13. When the electromagnet 7 is energized, the magnetic field at the docking position of the electromagnet 7 and the permanent magnet 8 disappears. When the electromagnet 7 is de-energized, the magnetic field around the end of the permanent magnet 8 at the docking position of the electromagnet 7 and the permanent magnet 8 generates an attractive force on the magnetic conductive plate 12, causing the first conductive plate 10 to contact the second conductive plate 11, and the electromagnetic actuator 6 to be electrically connected to the backup power supply 3.

[0031] The electromagnet 7 can be connected to an external circuit through two wires 9. When the external circuit is normally powered, the electromagnet 7 is charged and a magnetic field is generated at both ends of the electromagnet 7. The magnetic poles of the electromagnet 7 and the permanent magnet 8 correspond to each other. Therefore, the magnetic field at the docking position of the electromagnet 7 and the permanent magnet 8 can be transmitted stably. At this time, the magnetic field at this position will not spread outward, that is, the docking position of the electromagnet 7 and the permanent magnet 8 will not generate an attractive force on the magnetic plate 12.

[0032] When the external circuit is de-energized, the electromagnet 7 no longer generates magnetic force. At this time, the end of the permanent magnet 8 at the docking position of the electromagnet 7 and the permanent magnet 8 will release a magnetic field outward. This magnetic field is no longer restricted and will generate a magnetic attraction force on the magnetic guide plate 12, causing the magnetic guide plate 12 to move toward the permanent magnet 8. The magnetic guide plate 12 then drives the conductive plate 11 to move synchronously. When the conductive plate 11 and the conductive plate 10 are in contact, the backup power supply 3, the conductive plate 11, the magnetic guide plate 12 and the electromagnetic actuator 6 form a circuit. The backup power supply 3 can provide power to the electromagnetic actuator 6.

[0033] When the electromagnet 7 is energized again, the electromagnet 7 no longer releases a magnetic field at the docking position with the permanent magnet 8. The elastic force provided by the elastic body 13 to the magnetic plate 12 will cause the magnetic plate 12 and the permanent magnet 8 to separate from each other, thereby causing the conductive plate 10 and the conductive plate 11 to separate from each other, and the backup power supply 3 will no longer supply power to the electromagnetic actuator 6.

[0034] In practical use, the electromagnetic actuator 6 can be purchased directly, and because there is a spring inside the electromagnetic actuator 6, when the electromagnetic actuator 6 is de-energized, the electromagnetic actuator 6 can automatically push the partition 5 to reset.

[0035] Furthermore, the lighting device also includes two conductive contacts 14 arranged opposite to each other. The two conductive contacts 14 are respectively disposed on the inner wall of the lamp box 1 and on the partition 5. After the partition 5 moves a predetermined distance, the two conductive contacts 14 come into contact with each other, so that the backup power supply 3 is electrically connected to the lighting lamp 2.

[0036] In its natural state, the two conductive contacts 14 are far apart. When emergency lighting is needed, the electromagnetic actuator 6 is energized and drives the partition 5 and the lighting lamp 2 to move outward. At this time, the two conductive contacts 14 approach each other until they are in contact. The two conductive contacts 14 limit the movement of the partition 5. At this time, the backup power supply 3, the two conductive contacts 14 and the lighting lamp 2 form a circuit, and the backup power supply 3 can provide power to the lighting lamp 2.

[0037] Using the above structure, during emergency lighting, the lighting lamp 2 and the partition 5 can be moved to the designated position before the lighting lamp 2 is turned on. When the emergency lighting is completed, the lighting lamp 2 is turned off first and then moved back to the initial position.

[0038] Furthermore, each lid 4 is provided with a push assembly 15, which pushes the lid 4 to open or close when the partition 5 moves.

[0039] The push assembly 15 can be an electric push rod or other structure that can use electrical energy to drive the cover 4 to open or close. When the partition 5 moves toward the opening of the lamp box 1, the push assembly 15 controls the cover 4 to open. When the partition 5 moves toward the inside of the lamp box 1, the push assembly 15 controls the cover 4 to close.

[0040] In some embodiments, the movement of the partition 5 can also be used to drive the lid 4 to open or close by pushing the assembly 15.

[0041] To improve the force balance of the lid 4, push groups 15 can be set on both sides of the lid 4.

[0042] Furthermore, the push assembly 15 includes a slider 16 and a rotating wheel 17. The movement trajectory of the slider 16 on the inner wall of the light box 1 is parallel to the movement trajectory of the partition 5, and the rotating wheel 17 is rotatably mounted on the slider 16. The slider 16 is connected to the lid 4 by a support arm 18 and a support arm 29 that are rotatably connected to each other. The wheel 17 is connected to the lid 4 by a push-pull arm 10 and a push-pull arm 21 that are rotatably connected to each other, and the push-pull arm 21 is rotatably set on the lid 4.

[0043] When slider 16 moves toward the opening of light box 1, slider 16 will drive the rotating wheel 17, support arm 18, support arm 19, push-pull arm 20 and push-pull arm 21 to move synchronously. At this time, since the rotating wheel 17 is stationary on slider 16, support arm 19 and push-pull arm 21 can push the cover 4 outward to move in a translational motion. The cover 4 can be smoothly moved out of the step position of the opening of light box 1. Then, rotate the rotating wheel 17. The rotating wheel 17 can push the cover 4 outward to flip through push-pull arm 20 and push-pull arm 21. The cover 4 drives support arm 19 to rotate on support arm 18, thereby pushing the cover 4 away from the opening of light box 1.

[0044] It should be noted that the second support arm 19 can assist in supporting the lid 4, allowing the lid 4 to have a certain amount of room to move between it and the first support arm 18, thereby increasing the flipping angle of the lid 4.

[0045] Furthermore, the push assembly 15 also includes a fixed plate 22 and a movable plate 23 arranged collinearly along the moving direction of the slider 16. The fixed plate 22 is fixed to the inner wall of the light box 1, and the movable plate 23 can move on the fixed plate 22 through the guide post 24. The moving trajectory of the movable plate 23 is parallel to the moving trajectory of the slider 16. The fixed plate 22 and the movable plate 23 are connected by an elastic body 25. A stop 26 is provided on the side wall of the movable slat 23 to block the rotating wheel 17, which can roll on the fixed slat 22 or the movable slat 23. The partition 5 and the rotating wheel 17 are connected by a connecting rod 27.

[0046] like Figure 4As shown, when the cover 4 seals the opening of the light box 1, the elastic body 25 is in an elastic deformation state, the fixed strip 22 and the movable strip 23 are separated from each other, and the rotating wheel 17 and the stop 26 remain in contact. When the partition 5 moves toward the opening of the light box 1, the partition 5 pushes the rotating wheel 17 and the slider 16 to move outward synchronously through the connecting rod 27. Due to the pull of the elastic body 25 on the movable strip 23, the rotating wheel 17 and the movable strip 23 remain relatively stationary. At this time, the cover 4 moves outward with the slider 16. When the movable slat 23 comes into contact with the fixed slat 22, the movable slat 23 stops moving. The connecting rod 27 can push the rotating wheel 17 to roll from the movable slat 23 to the fixed slat 22, and allow the rotating wheel 17 to roll a certain distance on the fixed slat 22. At this time, the rotating wheel 17 rotates on the slider 16 and pushes the lid 4 to flip through the first push-pull arm 20 and the second push-pull arm 21, thereby realizing the two-stage movement mode of the lid 4. The guide column 24 can guide and support the movement of the movable slat 23.

[0047] It should be noted that the elastomer can be a structure with elastic function, such as a spring or sheet.

[0048] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A workshop safety emergency lighting device, characterized in that, include: The light box is fixed by embedding it in the wall, installing it on the wall, or hanging it on the ceiling, with the opening of the light box facing the area to be illuminated; A lighting fixture is installed inside the light box and is used to illuminate the outside through the opening of the light box; A backup power supply is provided inside the lamp box and is used to provide energy for the lighting lamp; Two lids are positioned opposite each other at the opening of the light box, and the lighting lamp is turned on or off synchronously with the lids.

2. The workshop safety emergency lighting device according to claim 1, characterized in that, The light box is equipped with a partition that isolates the backup power supply in an independent space, and the lighting lamp is mounted on the partition.

3. The workshop safety emergency lighting device according to claim 2, characterized in that, The partition is movable inside the light box in a direction perpendicular to the opening of the light box, and moves toward the opening of the light box when the lighting is turned on.

4. The workshop safety emergency lighting device according to claim 3, characterized in that, The light box is equipped with a detection unit and an electromagnetic actuator. When the detection unit detects that the external circuit is de-energized, the backup power supply powers the electromagnetic actuator and causes the electromagnetic actuator to move the partition.

5. A workshop safety emergency lighting device according to claim 4, characterized in that, The detection unit includes an electromagnet and a permanent magnet that are connected to each other, and two wires connected to an external circuit are provided on the electromagnet. The inner wall of the lamp box is provided with a conductive plate 1, a conductive plate 2 and a magnetic plate. The conductive plate 2 and the magnetic plate are fixedly disposed relative to each other, and the magnetic plate can move in the lamp box along the direction of approaching or moving away from the docking position of the electromagnet and the permanent magnet. The magnetic plate is connected to the lamp box through an elastic body 1. When the electromagnet is energized, the magnetic field at the docking position between the electromagnet and the permanent magnet disappears. When the electromagnet is de-energized, the magnetic field around the end of the permanent magnet at the docking position between the electromagnet and the permanent magnet generates an attractive force on the magnetic conductive plate, causing the first conductive plate to contact the second conductive plate, and the electromagnetic actuator is electrically connected to the backup power supply.

6. A workshop safety emergency lighting device according to claim 3, characterized in that, The lighting device also includes two conductive contacts arranged opposite to each other. The two conductive contacts are respectively disposed on the inner wall of the lamp box and the partition. After the partition moves a predetermined distance, the two conductive contacts come into contact with each other, so that the backup power supply is electrically connected to the lighting lamp.

7. A workshop safety emergency lighting device according to claim 3, characterized in that, Each of the box lids is provided with a push group, which pushes the box lid to open or close when the partition moves.

8. A workshop safety emergency lighting device according to claim 7, characterized in that, The pushing assembly includes a slider and a rotating wheel. The slider's movement trajectory on the inner wall of the light box is parallel to the movement trajectory of the partition. The rotating wheel is rotatably mounted on the slider. The slider is connected to the box cover by a support arm 1 and a support arm 2 that are rotatably connected to each other. The wheel is connected to the box cover by a push-pull arm 1 and a push-pull arm 2 that are rotatably connected to each other, and the push-pull arm 2 is rotatably mounted on the box cover.

9. A workshop safety emergency lighting device according to claim 8, characterized in that, The pushing assembly also includes a fixed plate and a movable plate arranged collinearly along the moving direction of the slider. The fixed plate is fixed to the inner wall of the light box, and the movable plate can move on the fixed plate through a guide post. The moving trajectory of the movable plate is parallel to the moving trajectory of the slider. The fixed plate and the movable plate are connected by an elastic body. A stop is provided on the side wall of the movable slat to block the rotating wheel, and the rotating wheel can roll on the fixed slat or the movable slat; The partition plate and the rotating wheel are connected by a connecting rod.

Images