Emergency signboard convenient to disassemble and assemble

Abstract

The utility model relates to the technical field of public safety facilities, in particular to an emergency signboard convenient to disassemble and assemble, which comprises a fixing rod, a fixing back plate is fixedly connected to the side wall of the fixing rod, an emergency board is arranged on the front side of the fixing back plate, and an annular plate is fixedly connected to the side wall of the emergency board. Through the arrangement of a four-connecting-rod mechanism composed of the rotatable fixing block, the linkage type rack, the first connecting rod and the second connecting rod, size self-adaptive clamping of the emergency board can be achieved, the fixing block and the rack are rotationally connected, the angle can be automatically adjusted in the linear moving process of the rack, the emergency board clamping device can be attached to the surfaces of emergency boards with different thicknesses, and meanwhile the clamping efficiency is improved. And through synchronous meshing transmission of the driven wheels and the driving wheels, it is ensured that the racks drive the fixing blocks to move synchronously along the supporting rods, the clamping range is expanded, and therefore the emergency signboards of various sizes are compatible, and the problem that installation is loosened or fixing cannot be achieved due to size differences is solved.

Description

An easy-to-assemble and disassemble emergency sign Technical Field

[0001] This utility model relates to the field of public safety facilities technology, specifically an emergency sign that is easy to assemble and disassemble. Background Technology

[0002] With the rapid advancement of urbanization, the demand for public safety facilities in various public places such as shopping malls, schools, hospitals, and subway stations is increasing. Among them, emergency signs are important facilities that provide key guidance for evacuation in emergencies such as fires and earthquakes. Their performance and quality are directly related to the efficiency of emergency evacuation and the safety of people's lives.

[0003] Currently, existing emergency signs have many drawbacks in their installation methods. For example, while the traditional bolt fixing method can ensure the stability of the signs to a certain extent, it has obvious defects in actual use. This fixing method generally requires special tools for installation and removal, which is cumbersome and time-consuming. In emergency scenarios, such as during a fire, damaged or malfunctioning signs need to be replaced quickly. In such cases, the traditional bolt fixing method obviously cannot meet the need for rapid replacement, which may delay evacuation and cause serious consequences. While the existing simple clip-on installation method simplifies the installation process to some extent, its clamping range is limited and it is not suitable for different locations. Emergency signs for different purposes vary in size, and existing clip-on structures are difficult to adapt to signs of various sizes. This leads to loosening or even detachment during installation, which not only fails to fulfill the function of the emergency sign but may also create safety hazards. In addition, most existing clamping devices lack self-locking functionality and are prone to failure due to vibration or external interference during long-term use, further increasing safety risks. In summary, existing emergency sign installation methods suffer from problems such as cumbersome operation, poor adaptability, and lack of self-locking functionality, making it difficult to meet the needs of practical applications. Therefore, we propose an emergency sign that is easy to install and disassemble to solve the above problems. Summary of the Invention

[0004] The purpose of this utility model is to provide an emergency sign that is easy to assemble and disassemble, so as to solve the problems mentioned in the background art.

[0005] The technical solution of this utility model is as follows: An emergency sign that is easy to assemble and disassemble includes a fixing rod, a fixing back plate fixedly connected to the side wall of the fixing rod, an emergency sign on the front side of the fixing back plate, an annular plate fixedly connected to the side wall of the emergency sign, a plurality of symmetrically arranged support rods fixedly connected to the front end of the annular plate, a circular plate fixedly connected to the front end of each support rod, a fixed transmission device between the annular plate and the circular plate, the fixed transmission device including a plurality of symmetrically arranged driven wheels, one end of each driven wheel being rotatably connected to the side wall of the fixing back plate, the other end of each driven wheel being rotatably connected to the side wall of the circular plate, each driven wheel being meshed with a rack, a fixed locking device being provided on the right side of the fixing back plate, the fixed locking device including toothed grooves formed on the side wall of the fixing back plate.

[0006] Preferably, the fixed transmission device further includes a plurality of symmetrically arranged connecting rods, each connecting rod being rotatably connected to the side wall of an adjacent rack, each connecting rod being rotatably connected to a connecting rod, and each driven wheel being meshed with the same drive wheel.

[0007] Preferably, the fixing and locking device further includes a rotating rod, which is fixed to the right end of the drive wheel. A tension spring is fixedly connected to the right end of the rotating rod. Two symmetrically arranged strip grooves are opened on the surface of the rotating rod. A locking tube is sleeved on the surface of the rotating rod. The right end of the tension spring is fixedly connected to the inner wall of the locking tube. Two symmetrically arranged strip plates are fixedly connected to the inner wall of the locking tube.

[0008] Preferably, each of the racks is rotatably connected to a fixing block on its sidewall, and each fixing block is engaged with the sidewall of the emergency sign.

[0009] Preferably, each of the racks is slidably connected to the surface of the adjacent support rod, each of the connecting rods is rotatably connected to the side wall of the adjacent rack, and each driven wheel is slidably connected to the upper end of the drive wheel.

[0010] Preferably, the rotating rod passes through the inner wall of the tooth groove and extends to the right side of the fixed back plate, each of the strip plates is slidably connected to the inner wall of the corresponding strip groove, and the tooth groove is engaged with the left half surface of the locking tube.

[0011] This utility model provides an emergency sign that is easy to assemble and disassemble, which has the following improvements and advantages compared with the prior art:

[0012] Firstly, this utility model achieves adaptive clamping of emergency signs by setting up a four-bar linkage mechanism consisting of a rotatable fixed block, a linkage rack, a connecting rod one, and a connecting rod two. The rotatable connection design between the fixed block and the rack allows it to automatically adjust its angle during the linear movement of the rack, fitting the surface of emergency signs of different thicknesses. At the same time, the synchronous meshing transmission between multiple driven wheels and drive wheels ensures that each rack drives the fixed block to move synchronously along the support rod, expanding the clamping range and thus being compatible with emergency signs of various sizes, avoiding problems of loose installation or inability to fix due to size differences.

[0013] Secondly, this utility model, through the elastic self-locking structure of the locking tube and the toothed groove, combined with the automatic reset function of the tension spring, achieves quick disassembly and reliable locking of the emergency sign. During operation, simply pull the locking tube outward to disengage it from the toothed groove, and rotate it in one direction to drive the rack to move and clamp the emergency sign. After release, the tension spring automatically pulls back the locking tube to engage with the toothed groove, forming a mechanical self-lock, which completely prevents the clamp from loosening. During disassembly, the fixing block can be quickly released by reversing the operation. No tools are required throughout the process, which greatly shortens the maintenance time. It is especially suitable for the need for quick replacement of signs in emergency situations, while ensuring the stability of long-term use. Attached Figure Description

[0014] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0015] Figure 1 is a schematic diagram of the main structure of this utility model;

[0016] Figure 2 is a schematic diagram of the main structure of this utility model;

[0017] Figure 3 is a schematic diagram of the circular plate structure of this utility model;

[0018] Figure 4 is a schematic diagram of the annular plate structure of this utility model;

[0019] Figure 5 is a schematic diagram of the driven wheel structure of this utility model;

[0020] Figure 6 is a schematic diagram of the tooth alveolar structure of this utility model;

[0021] Figure 7 is a schematic diagram of the drive wheel structure of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Fixed rod; 2. Fixed back plate; 3. Emergency sign; 4. Ring plate; 5. Support rod; 6. Round plate; 7. Driven wheel; 8. Rack; 9. Fixed block; 10. Connecting rod one; 11. Connecting rod two; 12. Drive wheel; 13. Rotating rod; 14. Tension spring; 15. Strip groove; 16. Locking tube; 17. Strip plate; 18. Toothed groove. Detailed Implementation

[0024] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. 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 protection scope of the present invention.

[0025] This utility model provides an emergency sign that is easy to assemble and disassemble through improvements. The technical solution of this utility model is as follows:

[0026] As shown in Figures 1-7, an emergency sign that is easy to assemble and disassemble includes a fixed rod 1. A fixed back plate 2 is fixedly connected to the side wall of the fixed rod 1. An emergency sign 3 is provided on the front side of the fixed back plate 2. An annular plate 4 is fixedly connected to the side wall of the emergency sign 3. A plurality of symmetrically arranged support rods 5 are fixedly connected to the front end of the annular plate 4. The front end of each support rod 5 is fixedly connected to the same circular plate 6. A fixed transmission device is provided between the annular plate 4 and the circular plate 6. The fixed transmission device includes a plurality of symmetrically arranged driven wheels 7. One end of each driven wheel 7 is rotatably connected to the side wall of the fixed back plate 2, and the other end of each driven wheel 7 is rotatably connected to the side wall of the circular plate 6. Each driven wheel 7 is meshed with a rack 8. A fixed locking device is provided on the right side of the fixed back plate 2. The fixed locking device includes a toothed groove 18, which is formed on the side wall of the fixed back plate 2.

[0027] Furthermore, the fixed transmission device also includes multiple symmetrically arranged connecting rods 10, each connecting rod 10 being rotatably connected to the side wall of the adjacent rack 8, and each connecting rod 10 being rotatably connected to a connecting rod 2 11. Each driven wheel 7 is meshed with the same driving wheel 12. Through the meshing of the driven wheel 7 and the driving wheel 12, when the driving wheel 12 rotates, it will drive some of the driven wheels 7 to rotate together. Each driven wheel 7 in turn drives the corresponding rack 8 to move, so that each rack 8 can move synchronously.

[0028] Furthermore, the locking device also includes a rotating rod 13, which is fixed to the right end of the drive wheel 12. A tension spring 14 is fixedly connected to the right end of the rotating rod 13. Two symmetrically arranged strip grooves 15 are opened on the surface of the rotating rod 13. A locking tube 16 is sleeved on the surface of the rotating rod 13. The right end of the tension spring 14 is fixedly connected to the inner wall of the locking tube 16. Two symmetrically arranged strip plates 17 are fixedly connected to the inner wall of the locking tube 16. The tension spring 14 is arranged so that it always pulls the locking tube 16. When there is no external force, the left half of the locking tube 16 can be stably locked in the tooth groove 18.

[0029] Furthermore, each rack 8 has a rotatably connected fixing block 9 on its side wall, and each fixing block 9 is engaged with the side wall of the emergency sign 3. The rotatable connection between the fixing block 9 and the rack 8 allows the fixing block 9 to adapt to the size of the emergency sign 3 by rotating during movement, according to the different sizes of the emergency sign 3, so as to better clamp the emergency sign 3.

[0030] Furthermore, each rack 8 is slidably connected to the surface of the adjacent support rod 5, each connecting rod 11 is rotatably connected to the side wall of the adjacent rack 8, and each driven wheel 7 is slidably connected to the upper end of the drive wheel 12. By setting the support rod 5, a limit is provided for the adjacent rack 8, so that the rack 8 is always engaged with the driven wheel 7. By setting the connecting rod 10 and connecting rod 21 to form a four-bar linkage, the linear motion of the rack 8 is converted into the clamping action of the fixed block 9. When the rack 8 slides along the surface of the support rod 5, the connecting rod 9... The rotation center of rod 10 and drive wheel 12 forms a fixed fulcrum, while the rotational connection between connecting rod 11 and the side wall of rack 8 forms a movable fulcrum. This double-link structure ensures that the clamping force generated by rack 8 during movement is perpendicular to the surface of emergency sign 3 through the principle of triangular stability. At the same time, the clamping force is enhanced through the lever amplification effect. During the release process, when the locking tube 16 is rotated in the opposite direction, the connecting rod system will generate a reverse displacement, causing the fixing block 9 to detach from emergency sign 3 along a precise retraction trajectory, thus achieving non-destructive disassembly.

[0031] Furthermore, the rotating rod 13 penetrates the inner wall of the tooth groove 18 and extends to the right side of the fixed back plate 2. Each strip plate 17 is slidably connected to the inner wall of the corresponding strip groove 15. The tooth groove 18 is engaged with the left half of the locking tube 16. By setting the strip groove 15 and the strip plate 17, the locking tube 16 can move within the strip groove 15 through the strip plate 17. When the locking tube 16 rotates, it drives the strip plate 17 to rotate. Since the strip plate 17 is stuck in the strip groove 15, the rotating rod 13 will rotate together.

[0032] Working principle: In the initial state, the locking tube 16 and the toothed groove 18 are engaged. During use, the emergency sign 3 is placed in front of the fixed back plate 2, with the back of the emergency sign 3 abutting against the circular plate 6. Each fixing block 9 is secured to the surface of the emergency sign 3. Then, the locking tube 16 is pulled outwards, separating the left half of the locking tube 16 from the toothed groove 18. The locking tube 16 is then rotated. With the cooperation of the strip groove 15 and the strip plate 17, the rotation of the locking tube 16 drives the rotating rod 13 to rotate, which in turn drives the drive wheel 12 to rotate. The rotation of the drive wheel 12 drives the rotation of some of the driven wheels 7, which in turn causes some of the racks 8 to move, gradually approaching the drive wheel 12. Then, through the cooperation of each connecting rod 10 and connecting rod 11, the teeth... During the movement of rack 8, it moves within a certain range of angles using adjacent support rods 5 as fulcrums until the fixing blocks 9 on each rack 8 clamp the emergency sign 3 and fix it firmly. Finally, the locking tube 16 is released, and under the tension of the tension spring 14, the locking tube 16 re-enters the tooth groove 18, so that the left half of the locking tube 16 engages with the tooth groove 18. At this time, if the locking tube 16 is rotated again, since the left half of the locking tube 16 is stuck in the tooth groove 18, the locking tube 16 cannot be rotated, thus fixing some gears and preventing them from moving, achieving a self-locking function. When it is necessary to remove and replace the emergency sign 3, similarly, the left half of the locking tube 16 is pulled out from the tooth groove 18, and the locking tube 16 is rotated in the opposite direction to move the rack 8, so that the fixing blocks 9 release the emergency sign 3, achieving quick disassembly.

[0033] The foregoing description enables those skilled in the art to implement or use this invention. Various modifications to these embodiments will be readily 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 this invention. Therefore, this invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An emergency sign that is easy to assemble and disassemble, comprising a fixing rod (1), characterized in that: A fixed back plate (2) is fixedly connected to the side wall of the fixed rod (1). An emergency sign (3) is provided on the front side of the fixed back plate (2). An annular plate (4) is fixedly connected to the side wall of the emergency sign (3). A plurality of symmetrically arranged support rods (5) are fixedly connected to the front end of the annular plate (4). The same circular plate (6) is fixedly connected to the front end of each support rod (5). A fixed transmission device is provided between the annular plate (4) and the circular plate (6). The fixed transmission device includes a plurality of symmetrically arranged driven wheels (7). One end of each driven wheel (7) is rotatably connected to the side wall of the fixed back plate (2). The other end of each driven wheel (7) is rotatably connected to the side wall of the circular plate (6). Each driven wheel (7) is meshed with a rack (8). A fixed locking device is provided on the right side of the fixed back plate (2). The fixed locking device includes a tooth groove (18). The tooth groove (18) is opened on the side wall of the fixed back plate (2).

2. The emergency signboard that is easy to assemble and disassemble according to claim 1, characterized in that: The fixed transmission device also includes a plurality of symmetrically arranged connecting rods (10), each of the connecting rods (10) being rotatably connected to the side wall of the adjacent rack (8), each of the connecting rods (10) being rotatably connected to a connecting rod (11), and each driven wheel (7) being meshed with the same drive wheel (12).

3. The emergency signboard that is easy to assemble and disassemble according to claim 1, characterized in that: The fixing and locking device also includes a rotating rod (13), which is fixed to the right end of the drive wheel (12). A tension spring (14) is fixedly connected to the right end of the rotating rod (13). Two symmetrically arranged strip grooves (15) are opened on the surface of the rotating rod (13). A locking tube (16) is sleeved on the surface of the rotating rod (13). The right end of the tension spring (14) is fixedly connected to the inner wall of the locking tube (16). Two symmetrically arranged strip plates (17) are fixedly connected to the inner wall of the locking tube (16).

4. The emergency sign that is easy to assemble and disassemble according to claim 1, characterized in that: Each of the racks (8) has a fixing block (9) rotatably connected to its sidewall, and each fixing block (9) engages with the sidewall of the emergency sign (3).

5. An emergency sign that is easy to assemble and disassemble according to claim 2, characterized in that: Each of the racks (8) is slidably connected to the surface of the adjacent support rod (5), each of the connecting rods (11) is rotatably connected to the side wall of the adjacent rack (8), and each of the driven wheels (7) is slidably connected to the upper end of the drive wheel (12).

6. An emergency sign that is easy to assemble and disassemble according to claim 3, characterized in that: The rotating rod (13) passes through the inner wall of the tooth groove (18) and extends to the right side of the fixed back plate (2). Each of the strip plates (17) is slidably connected to the inner wall of the corresponding strip groove (15). The tooth groove (18) is engaged with the left half of the locking tube (16).

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