Turnover type electric signboard with locking function

Abstract

The utility model discloses a turning type electric signboard with a locking function, which is characterized by comprising a bottom plate (1), the bottom plate (1) is fixedly arranged on a fixed clamping plate through screws (2), a first warning plate (3) and a second warning plate (4) are detachably arranged on the bottom plate (1), and the first warning plate (3) and the second warning plate (4) are fixedly arranged on the bottom plate (1). The first warning plate (3) and the second warning plate (4) form a rotating connection structure through a pin shaft (5) and a first hinge (6), an air switch (11) is arranged at the bottom of the bottom plate (1), and a groove is formed in an operation handle (12) of the air switch (11). Therefore, the misoperation risk in the electric power overhaul operation is fundamentally reduced.

Description

Technical Field

[0001] This utility model relates to the field of warning devices, and in particular to a flip-type power sign with locking function. Background Technology

[0002] Currently, power plant production sites typically lack fixed hanging or placement of electrical signs such as "Do Not Close, People Working" and "Do Not Operate, People Working." This leads to situations where signs are difficult to find when needed, increasing the workload of power operation personnel. Furthermore, warning signs are usually suspended from air switches by traction ropes, which sometimes cause them to fall, rendering them ineffective and potentially leading to electrical safety accidents due to misoperation. However, traditional warning methods have the following drawbacks: Insufficient reliability: Existing warning signs are mostly installed by hanging, with traction ropes wrapped around the air switch operating handle or door panel. Due to the irregular shape of the operating handle (such as cylindrical or flat) and its smooth surface, hanging signs are easily detached by external forces (such as airflow or vibration) or human contact, failing to maintain their warning effect. High risk of misoperation: Air switch operating handles are usually directly exposed to the environment. Even with hanging signs, non-staff members may still operate the switch directly due to ignoring the signs or misjudging the equipment status. Especially in complex power distribution environments, the risk of accidental activation increases significantly when operating handles are densely packed. Warning functions are limited: existing warning signs are mostly fixed single-sided labels (e.g., "Do Not Close, People Working"), unable to adjust warning content based on equipment status (e.g., under maintenance / powered), requiring frequent sign replacements and increasing operational complexity. Physical protection is lacking: traditional warning devices only provide visual warnings and lack physical protection for the operating handles. Even if the label remains attached, accidental activation can still occur by directly touching the operating handle, significantly increasing the probability of misoperation, especially in emergency situations.

[0003] To address the aforementioned issues, existing technologies attempt to improve the reliability of warning devices through structural modifications. For example, prior art document 1 (patent CN202222921839.1, a warning sign for an air switch) proposes a warning device that uses a cover plate to cover the air switch, achieving clamping and fixation through an elastic sheet and anti-slip pad, and featuring a sliding double-sided warning plate to switch warning content. However, this solution still has the following shortcomings: the cover plate, held by elastic deformation, has poor adaptability to the air switch housing material (such as metal), and may detach due to insufficient clamping force; switching the warning plate requires manual pushing and pulling, resulting in insufficient operational convenience, and the lack of a physical locking mechanism allows direct contact with the operating handle by removing the cover plate.

[0004] Prior art document 2 (patent CN201621229162.3 Air switch warning clip) discloses an L-shaped insulating warning clip, which uses a push rod and spring to clamp and fix the clip, and uses a tag pin to hang the sign. However, this solution only provides clamping function, and the warning information still relies on an external sign, which does not solve the problem of the sign easily falling off; it also lacks physical protection for the operating handle, and the risk of misoperation is not effectively contained.

[0005] Therefore, there is an urgent need in this field for a warning plate that can be semi-fixed and installed near the air switch to serve as a reminder when someone is performing maintenance work. After use, it can be manually flipped over before the switch can be closed, thus minimizing the occurrence of electrical safety accidents. Utility Model Content

[0006] The purpose of this utility model is to provide a flip-type power sign with locking function to address the above-mentioned problems. This utility model is a warning device that combines stable fixing, dual-sided warning switching and physical locking of the operating handle, so as to fundamentally reduce the risk of misoperation in power maintenance operations.

[0007] The technical solution of this utility model is as follows:

[0008] This utility model discloses a flip-type power sign with locking function, including a base plate (1), which is fixedly mounted on a fixed clamp by screws (2). A first warning plate (3) and a second warning plate (4) are detachably mounted on the base plate (1). The first warning plate (3) and the second warning plate (4) are connected to a first hinge (6) by a pin (5). An air switch (11) is provided at the bottom of the base plate (1), and a groove is provided on the operating handle (12) of the air switch (11).

[0009] By fixing the base plate and clamping plate with screws, a rigid connection between the equipment and the installation foundation is achieved, solving the problem of traditional hanging warning signs being easy to fall off and improving the stability of the equipment under vibration or external force. The warning plate connected by hinges can be flipped in both directions, making it easy to quickly switch between warning information such as "Do not close" and "Allow to close", adapting to different scenarios of maintenance and power supply operations. The groove of the air switch operating handle provides a structural interface for the subsequent locking mechanism, realizing the integration of physical protection and warning functions.

[0010] Furthermore, the base plate (1) is fixedly mounted on the fixed clamp by at least two screws (2), and the screws (2) are distributed along the diagonal of the base plate (1). The distribution of at least two screws along the diagonal disperses the fixing stress and prevents the base plate from deforming or loosening due to single-point force. This is especially suitable for metal or irregularly shaped installation surfaces and improves the adaptability of the equipment to complex environments.

[0011] Furthermore, the first warning plate (3) and the second warning plate (4) are connected to the two first hinges (6) by two parallel pins (5). The leaves of the first hinges (6) are fixedly connected to the first warning plate (3) and the base plate (1) respectively. The design of the two parallel pins and hinges ensures that the warning plate is subjected to uniform force when it is flipped, reduces the risk of jamming, and extends the service life of the equipment. The double hinge structure enhances the connection strength between the warning plate and the base plate and prevents the connection from failing after long-term use.

[0012] Furthermore, a first adsorption element (7) is embedded on the top of the first warning plate (3), and a second adsorption element (8) is embedded at the position corresponding to the top of the second warning plate (4). The first adsorption element (7) and the second adsorption element (8) are permanent magnets with opposite polarities. The adsorption of the permanent magnets enables the warning plate to be fixed without tools. The warning information can be switched by one hand, improving work efficiency. The magnetic adsorption force ensures that the warning plate remains stable when not in operation, avoiding accidental flipping due to vibration or airflow.

[0013] Furthermore, the top of the first warning plate (3) is integrally formed with a cylindrical protrusion (9), and the second warning plate (4) is provided with a circular through hole (10) at the position corresponding to the top of the first warning plate (3). The diameter of the protrusion (9) is adapted to the diameter of the through hole (10). The engagement between the protrusion and the through hole provides a mechanical locking function. As a redundant design for magnetic adsorption, it prevents the warning plate from falling off due to weakened magnetism or external impact. The cylindrical design reduces frictional resistance during engagement and improves the operating feel.

[0014] Furthermore, a fixing block (16) is welded to the lower left side of the second warning plate (4). A sliding hole is provided on the fixing block (16), and a pin (14) is slidably disposed in the sliding hole. A cylindrical helical spring (15) is sleeved on the pin (14). The left end of the pin (14) is a large end structure, and the right end is a small end structure. The outer diameter of the spring (15) is smaller than the large end diameter of the pin (14) and larger than the small end diameter of the pin (14). The pin and the spring combine to form a physical locking mechanism. The spring preload force makes the small end of the pin continuously inserted into the groove of the operating handle, completely blocking the path of accidental closing. The structure of the large end and the small end of the pin prevents the spring from falling off and ensures the reliability of locking.

[0015] Furthermore, the large end diameter of the pin (14) is 3mm larger than the small end diameter, and the small end of the pin (14) is provided with a chamfer structure. The diameter difference ensures the stability of spring installation, and the chamfer structure guides the small end of the pin to smoothly insert into the groove, reducing operating resistance and improving user experience.

[0016] Furthermore, the door panel of the air switch (11) forms a rotating connection structure with the base plate (1) through the second hinge (13). The leaf of the second hinge (13) is fixedly connected to the door panel and the base plate (1) of the air switch (11) respectively. The second hinge connects the door panel of the air switch and the base plate to ensure that the door panel can be opened and closed normally, while maintaining a stable connection with the base plate, avoiding equipment damage or safety hazards caused by the door panel falling off, and improving the overall reliability of the equipment.

[0017] Furthermore, the first warning plate (3) and the second warning plate (4) are detachably mounted on the base plate (1) through a slot structure. The slot structure includes a T-shaped groove on the base plate (1) and a T-shaped protrusion on the back of the warning plate. The T-shaped groove and the T-shaped protrusion slot structure enable quick assembly and disassembly of the warning plate, making it easy to replace the warning plate with different warning content (such as "Do Not Operate" or "High Voltage Danger") according to the operation requirements, thus expanding the applicability of the equipment.

[0018] Furthermore, the groove of the air switch operating handle (12) is a rectangular structure, and the width of the groove is adapted to the diameter of the small end of the pin (14). The rectangular groove and 5mm depth design ensure that the small end of the pin is accurately engaged, and the surface contact replaces the line contact, enhancing the engagement stability. The width adaptation design prevents the pin from accidentally coming out due to vibration or external force, improving the reliability of physical locking.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0020] 1. This utility model discloses a flip-type power sign with locking function, which, through screw fixing, double hinge connection, and slot structure, allows the device to be stably installed on metal / non-metal and regular / irregular surfaces. Applicable scenarios include...

[0021] 2. The tool-free flipping design and one-handed operation locking mechanism of this utility model shorten the warning information switching time and significantly improve the efficiency of maintenance work.

[0022] 3. The pin, spring, groove and warning plate of this utility model work together to effectively reduce accidental closing. Attached Figure Description

[0023] Figure 1 This is a front view of the warning device of a flip-type power sign with locking function according to Embodiment 1 of this utility model;

[0024] Figure 2 This is a side view of the warning device according to Embodiment 1 of this utility model;

[0025] Figure 3 This is a front view of the warning device according to Embodiment 2 of this utility model;

[0026] Figure 4 This is a side view of the warning device according to Embodiment 2 of this utility model.

[0027] Reference numerals: 1-Base plate; 2-Screw; 3-First warning plate; 4-Second warning plate; 5-Pin; 6-First hinge; 7-First suction element; 8-Second suction element; 9-Protrusion; 10-Through hole; 11-Switch; 12-Operating handle; 14-Pin; 15-Spring; 16-Fixing block. Detailed Implementation

[0028] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0029] The features and performance of this utility model will be further described in detail below with reference to the embodiments.

[0030] Example 1:

[0031] See Figure 1-2 In the first embodiment, the base plate 1 is fixedly mounted on the fixed clamping plate by screws 2. A first warning plate 3 and a second warning plate 4 are detachably mounted on the base plate. The first warning plate 3 and the second warning plate 4 are rotatably connected to the first hinge 6 by a pin 5. A first suction member 7 is provided on the top of the first warning plate 3, and a second suction member 8 is provided on the second warning plate 4 at the corresponding position of the first warning plate 3. The first warning plate 3 and the second warning plate 4 are connected by suction through the first suction member 7 and the second suction member 8. An air switch 11 is provided at the bottom of the base plate 1, and the door panel of the air switch 11 is rotatably connected by a second hinge 13.

[0032] Normally, the first warning plate 3 and the second warning plate 4 are connected by adsorption through the first and second adsorption components. When the circuit breaker needs to be tripped for maintenance, the staff will flip the second warning plate and the second adsorption component downwards. At this time, the words "Do not close the circuit breaker, people are working" on the warning plate can effectively remind others to avoid accidentally touching the circuit breaker.

[0033] Example 2:

[0034] See Figure 3-4In the second embodiment, the base plate 1 is fixedly mounted on the fixed clamping plate by screws 2. A first warning plate 3 and a second warning plate 4 are detachably mounted on the base plate. The first warning plate 3 and the second warning plate 4 are rotatably connected to the first hinge 6 by a pin 5. The top of the first warning plate 3 is provided with a protrusion 9, and the second warning plate 4 is provided with a through hole 10 at the corresponding position of the first warning plate 3. The first warning plate 3 and the second warning plate 4 are engaged and connected by the protrusion 9 and the through hole 10. An air switch 11 is provided at the bottom of the base plate 1, and the door panel of the air switch 11 is rotatably connected by a second hinge 13.

[0035] Normally, the through hole 10 of the second warning plate 4 engages with the protrusion 9 of the first warning plate. When the circuit breaker needs to be tripped for maintenance, the staff will flip the first warning plate 3 downwards to disengage the through hole 10 and the protrusion 9. At this time, the words "Do not close the circuit breaker, people are working" on the warning plate can effectively remind others to avoid accidentally touching the circuit breaker.

[0036] Example 3:

[0037] See Figure 1 and 3 This application further provides a groove on the air switch operating handle 12, and a fixing block 16 is provided on the lower left side of the second warning plate. A pin 14 is slidably provided on the fixing block 16, and a spring 15 is sleeved on the pin 14. The left end of the pin 14 is the large end, and the right end is the small end. The diameter of the spring 15 is smaller than the large end and the small end, so that it will not detach from the pin.

[0038] When the second warning plate 4 rotates downwards with the rotation of the pin 5 and the first hinge 6, the pin 14 on the second warning plate 4 aligns with the groove of the operating handle 12 on the air switch. Under the action of the spring 15, the pin 14 is engaged in the groove. When the operator needs to open the air switch, the operation of the pin and the groove must be disengaged before the second warning plate can be flipped, thus further reminding the operator.

[0039] The embodiments described above merely illustrate specific implementation methods of this application, and while the descriptions are detailed and specific, they should not be construed as limiting the scope of protection of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the technical solution of this application, and these modifications and improvements all fall within the scope of protection of this application.

Claims

1. A flip type power sign with a locking function, characterized in that: Includes a base plate (1), which is fixedly mounted on a fixed clamp by screws (2). A first warning plate (3) and a second warning plate (4) are detachably mounted on the base plate (1). The first warning plate (3) and the second warning plate (4) are connected to a first hinge (6) by a pin (5). An air switch (11) is provided at the bottom of the base plate (1). A groove is provided on the operating handle (12) of the air switch (11).

2. The electric sign of claim 1, wherein: The base plate (1) is fixedly mounted on the fixed clamp by at least two screws (2), and the screws (2) are distributed along the diagonal of the base plate (1).

3. The electric sign of claim 1, wherein: The first warning plate (3) and the second warning plate (4) are connected to the two first hinges (6) by two parallel pins (5). The leaves of the first hinges (6) are fixedly connected to the first warning plate (3) and the base plate (1) respectively.

4. The electric sign of claim 1, wherein: The first warning plate (3) is provided with a first adsorption element (7) at the top, and the second warning plate (4) is provided with a second adsorption element (8) at the position corresponding to the top of the first warning plate (3). The first adsorption element (7) and the second adsorption element (8) are permanent magnets with opposite polarities.

5. The electric sign of claim 1, wherein: The first warning plate (3) has a cylindrical protrusion (9) integrally formed on the top. The second warning plate (4) has a circular through hole (10) at the position corresponding to the top of the first warning plate (3). The diameter of the protrusion (9) is adapted to the diameter of the through hole (10).

6. The electric sign of claim 1, wherein: The second warning plate (4) has a fixing block (16) welded to the lower left side. The fixing block (16) has a sliding hole, and a pin (14) is slidably disposed in the sliding hole. A cylindrical helical spring (15) is sleeved on the pin (14). The left end of the pin (14) is a large end structure, and the right end is a small end structure. The outer diameter of the spring (15) is smaller than the large end diameter of the pin (14) and larger than the small end diameter of the pin (14).

7. The electric sign of claim 6, wherein: The large end diameter of the pin (14) is 3mm larger than the small end diameter, and the small end of the pin (14) is provided with a chamfer structure.

8. The electric sign of claim 1, wherein: The door panel of the air switch (11) forms a rotating connection structure with the base plate (1) through the second hinge (13), and the leaf of the second hinge (13) is fixedly connected to the door panel and the base plate (1) of the air switch (11) respectively.

9. The electric sign of claim 4 or 5, wherein: The first warning plate (3) and the second warning plate (4) are detachably mounted on the base plate (1) through a slot structure. The slot structure includes a T-shaped groove on the base plate (1) and a T-shaped protrusion on the back of the warning plate.

10. The electric sign of claim 1, wherein: The groove of the air switch operating handle (12) is rectangular, and the width of the groove is adapted to the small end diameter of the pin (14).

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