A sign with interlocking function applied to electrical operating handles

Abstract

This utility model relates to the field of electrical safety protection technology, aiming to solve the problems of accidental operation of operating handles and easy breakage of the hanging wires of the sign in the prior art. It provides a sign with a locking function applied to electrical operating handles, including a sign plate. A hollow hole is opened at the center of the top surface of the sign plate, and a limiting block is installed inside the hollow hole, fixed to the inner wall of the hollow hole. The limiting block has several limiting slots that penetrate the sign plate and are evenly distributed along the circumference of the hollow hole. The beneficial effects of this utility model are: physical prevention of accidental operation, avoidance of hanging wire breakage and detachment, ensuring maintenance safety, standardized and aesthetically pleasing on-site appearance, simple structure, convenient operation, and enhanced safety protection and reliability of power maintenance.

Description

Technical Field

[0001] This utility model relates to the field of electrical safety protection technology, and more specifically, to a sign with a locking function applied to an electrical operating handle. Background Technology

[0002] In the operation of power systems, ensuring the safety of equipment maintenance is a core aspect of safe power production. According to the power safety work regulations, energized or pressurized equipment must be isolated before maintenance work begins to prevent accidental equipment operation from injuring maintenance personnel. Operating personnel must implement safety technical measures such as power outage, voltage testing, grounding, isolation, pressure relief, hanging signs, and installing barriers. Among these measures, hanging "Do Not Close, People Working!" signs on the operating handles of circuit breakers, disconnect switches, and other equipment that can supply power to the work site is a key warning method.

[0003] However, the commonly used hanging-wire signs currently in use have significant drawbacks: First, they only provide visual warnings and lack a physical locking mechanism, failing to effectively restrain the operating handle. The handle remains susceptible to accidental touches and unexpected actions. For example, at a large hydropower station, a maintenance worker accidentally touched the handle, causing the equipment to suddenly start. Although no injuries were reported, this incident highlighted the real threat of safety hazards. Second, if the operating handle is accidentally activated, the equipment under maintenance may suddenly start or become energized, directly endangering the personal safety of on-site maintenance personnel and posing a risk of equipment damage. This seriously affects the stable operation of the power system and the safe order of maintenance work. Third, existing signs rely on hanging wires, which are prone to breakage due to aging or stress, making it difficult to securely fix the signs to the operating handle. Furthermore, the varying lengths of the hanging wires often result in the signs being tilted or leaning, affecting the standardization of on-site safety signage and reducing the intuitiveness of the warning effect, failing to meet the standardized requirements for equipment signage in power safety production.

[0004] These shortcomings make it difficult for traditional signs to fully guarantee the safety of maintenance operations in practical applications. Utility Model Content

[0005] The present invention aims to provide a sign with a locking function for use on electrical operating handles, in order to solve the problems of accidental operation of operating handles and easy breakage of sign hanging wires in the prior art.

[0006] The embodiments of this utility model are implemented as follows:

[0007] This utility model embodiment provides a sign with a locking function applied to an electrical operating handle, which includes a sign plate;

[0008] A hollow hole is provided at the center of the top surface of the aforementioned signboard, and a limiting block is provided inside the hollow hole. The limiting block is fixed to the inner wall of the hollow hole.

[0009] The aforementioned limiting block has several limiting slots, which penetrate the aforementioned marking plate and are evenly distributed along the circumference of the aforementioned hollow hole.

[0010] When in use, the staff fixes the above-mentioned label plate on the cabinet corresponding to the operating handle, so that the operating handle is located in the above-mentioned hollow hole. The operating handle cannot be moved or switched through the above-mentioned limit slots in the limit block, so as to achieve the purpose of physical locking to prevent accidental operation.

[0011] The locking signboard disclosed in this implementation scheme, applied to an electrical operating handle, has the aforementioned limit block and several aforementioned limit slots, which prevent the operating handle from moving or switching states. As a result, the locking signboard applied to an electrical operating handle has the beneficial effects of physically preventing accidental operation, avoiding wire breakage and detachment, ensuring maintenance safety, making the site neat and aesthetically pleasing, having a simple structure, being easy to operate, and enhancing the safety protection and reliability of power maintenance.

[0012] Optionally: The above signboard is a rectangular structure.

[0013] This design ensures better compatibility with the mounting carrier of the operating handle, providing stable support for magnetic strip adsorption and card slot fixation. Its simple processing technology facilitates mass production, and the regular edges optimize the spatial layout to fully display warning information. At the same time, the straight edges improve the ease of operation when hanging and removing the sign, making the sign more beautiful and neat, and laying the foundation for the overall functionality of the sign.

[0014] Optionally, the bottom surface of the above-mentioned signboard is provided with a first magnetic strip, a second magnetic strip and a third magnetic strip, and the first magnetic strip, the second magnetic strip and the third magnetic strip are all fixedly installed on the bottom surface of the above-mentioned signboard.

[0015] This setup, with its multi-point fixation, enhances the adhesion and stability of the signboard to the operating handle base or cabinet door, preventing the signboard from shifting or falling off due to a single magnetic strip's weak adhesion. The multi-magnetic strip layout can adapt to the planar structure of different operating handle carriers, ensuring the precise relative position of the signboard and operating handle in the locked state, guaranteeing reliable limiting of the mechanical locking mechanism, and strengthening the stability and adaptability of the signboard fixation, thus providing support for preventing accidental operation and ensuring operational safety.

[0016] Optionally, the top surface of the aforementioned signboard is also provided with a warning sign area, which is located below the aforementioned limit block.

[0017] This setup ensures that warning messages such as "Do not close the switch, people are working!" are within easy visual observation areas, allowing staff to quickly identify the locked status and work warnings. Furthermore, by coordinating with the positions of the aforementioned limit blocks, it enhances the visual warning effect while achieving the physical locking function, forming a dual prompt of "physical locking + visual warning," further improving the intuitiveness and effectiveness of on-site safety warnings.

[0018] Optionally, a plurality of the aforementioned limiting slots have a first limiting slot, a second limiting slot, and a third limiting slot, wherein the slot directions of the first limiting slot, the second limiting slot, and the third limiting slot intersect each other, and the first limiting slot, the second limiting slot, and the third limiting slot all penetrate the aforementioned marking plate.

[0019] This design precisely corresponds to the different states of the operating handle, such as "automatic / cut-off / manual" and "remote / cut-off / local". The intersecting structure of the first, second, and third limiting slots enables multi-directional locking of the operating handle, preventing accidental state switching. The through-type design of the first, second, and third limiting slots ensures smoother installation of the operating handle and several limiting slots. At the same time, the multi-slot layout improves the versatility and locking reliability of the handle in different states, providing precise and comprehensive structural support for physical anti-misoperation.

[0020] Optionally, a first limiting strip and a second limiting strip are respectively provided between adjacent first limiting grooves, second limiting grooves and third limiting grooves. The first limiting strip and the second limiting strip are both perpendicular to the marking plate and fixedly connected to the wall of the hollow hole.

[0021] With this configuration, the first and second limit bars effectively isolate and distinguish the first, second, and third limit slots, facilitating multi-directional upper limit locking of the operating handle and preventing accidental switching of its state.

[0022] Optionally, the interior of the aforementioned hollow hole is further provided with a stop, which corresponds to the aforementioned first limiting groove, the aforementioned second limiting groove and the aforementioned third limiting groove, and the two ends of the aforementioned stop are respectively fixed to the hole wall of the aforementioned hollow hole.

[0023] This configuration, through the precise correspondence between the aforementioned stop and the first, second, and third limiting grooves, creates multi-directional and targeted mechanical obstructions for the operating handle embedded in the slot, enhancing the limiting and locking effect of the operating handle in different gear positions and preventing accidental slippage or displacement. Simultaneously, the structure fixing the ends of the aforementioned stop enhances the overall structural strength of the sign, preventing deformation due to long-term use and stress, ensuring the durability and reliability of the locking mechanism against accidental activation, and further improving the stability of the physical locking function.

[0024] In summary, the sign with locking function applied to electrical operating handles disclosed in this utility model has the beneficial effects of physically preventing accidental operation, avoiding wire breakage and detachment, ensuring maintenance safety, making the site neat and aesthetically pleasing, having a simple structure, being easy to operate, and strengthening the safety protection and reliability of power maintenance. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a front structural diagram of a sign with a locking function applied to an electrical operating handle according to an embodiment of the present utility model;

[0027] Figure 2 This is a schematic diagram of the back structure of a sign with a locking function applied to an electrical operating handle in an embodiment of the present invention.

[0028] Figure 3 This is a schematic diagram illustrating the usage status of a sign with a locking function applied to an electrical operating handle, as described in this utility model embodiment.

[0029] Icons: 1-Identification plate, 2-Hollow hole, 3-Limiting block, 4-Limiting slot, 5-First magnetic strip, 6-Second magnetic strip, 7-Third magnetic strip, 8-Warning slogan area, 9-First limiting groove, 10-Second limiting groove, 11-Third limiting groove, 12-First limiting strip, 13-Second limiting strip, 14-Block. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0032] Example

[0033] See Figure 1 , Figure 2 and Figure 3 This embodiment proposes a sign with a locking function applied to an electrical operating handle, including a sign plate 1;

[0034] A hollow hole 2 is provided at the center of the top surface of the signboard 1, and a limiting block 3 is provided inside the hollow hole 2. The limiting block 3 is fixed on the inner wall of the hollow hole 2.

[0035] The limiting block 3 has several limiting slots 4, which penetrate the marking plate 1 and are evenly distributed along the circumference of the hollow hole.

[0036] When in use, the staff fixes the label plate 1 on the cabinet corresponding to the operating handle, so that the operating handle is located in the hollow hole 2. The operating handle cannot be moved or switched through several limit slots 4 in the limit block 3, so as to achieve the purpose of physical locking to prevent accidental operation.

[0037] The lockable signboard disclosed in this implementation scheme, which is applied to an electrical operating handle, has a limit block 3 and several limit slots 4, which prevent the operating handle from moving or switching states. As a result, the lockable signboard applied to an electrical operating handle has the beneficial effects of physically preventing accidental operation, avoiding wire breakage and detachment, ensuring maintenance safety, making the site neat and beautiful, simple in structure, convenient in operation, and strengthening the safety protection and reliability of power maintenance.

[0038] See Figure 1 , Figure 2 and Figure 3 The signboard 1 has a rectangular structure, which makes it more compatible with the mounting carrier of the operating handle and provides stable support for magnetic strip adsorption and card slot fixation. Its processing technology is simple and easy to mass-produce. The regular edges can also optimize the spatial layout to fully display the warning information. At the same time, the straight edges improve the ease of operation when hanging and removing, making the signboard more beautiful and neat, laying the foundation for the overall function of the signboard.

[0039] The bottom surface of the signboard 1 is provided with a first magnetic strip 5, a second magnetic strip 6, and a third magnetic strip 7. The first magnetic strip 5, the second magnetic strip 6, and the third magnetic strip 7 are all fixedly installed on the bottom surface of the signboard 1. Through multi-point fixation, the adsorption stability between the signboard 1 and the operating handle base or cabinet door is enhanced, avoiding the displacement or detachment of the signboard due to the weak adsorption of a single magnetic strip. The multi-magnetic strip layout can adapt to the planar structure of different operating handle carriers, ensuring the accurate relative position of the signboard and the operating handle in the locked state, ensuring the reliable limiting of the mechanical locking mechanism, and at the same time enhancing the stability and adaptability of the signboard fixation, providing support for preventing accidental operation and ensuring operational safety.

[0040] See Figure 1 , Figure 2 and Figure 3 The top surface of the signboard 1 is also equipped with a warning sign area 8, which is located below the limit block 3. This ensures that warning information such as "Do not close the switch, people are working!" is in an easily visible area, allowing staff to quickly identify the locked status and work warnings. In addition, by cooperating with the position of the limit block 3, it enhances the visual warning effect while realizing the physical locking function, forming a dual prompt of "physical locking + visual warning", further improving the intuitiveness and effectiveness of on-site safety warnings.

[0041] See Figure 1 , Figure 2 and Figure 3 The system includes several limiting slots 4, each with a first limiting slot 9, a second limiting slot 10, and a third limiting slot 11. The slots of the first limiting slot 9, the second limiting slot 10, and the third limiting slot 11 intersect each other. All three limiting slots penetrate the indicator plate 1. This design allows for precise correspondence between different operating positions of the handle, such as "automatic / cut-off / manual" and "remote / cut-off / local." The intersecting slots of the first limiting slot 9, the second limiting slot 10, and the third limiting slot 11 enable multi-directional limiting and locking of the operating handle, preventing accidental switching of its state. The through-hole design of the first limiting slot 9, the second limiting slot 10, and the third limiting slot 11 ensures smoother installation of the operating handle and the several limiting slots 4. At the same time, the multi-slot layout improves the versatility and locking reliability of the handle in different states, providing precise and comprehensive structural support for physical anti-misoperation.

[0042] First limiting strip 12 and second limiting strip 13 are respectively provided between the first limiting groove 9, the second limiting groove 10 and the third limiting groove 11. The first limiting strip 12 and the second limiting strip 13 are perpendicular to the marking plate 1 and fixedly connected to the hole wall of the hollow hole 2. The first limiting strip 12 and the second limiting strip 13 effectively isolate and distinguish the first limiting groove 9, the second limiting groove 10 and the third limiting groove 11, which facilitates multi-directional upper limit locking of the operating handle and prevents it from accidentally switching states.

[0043] See Figure 1 , Figure 2 and Figure 3 Inside the hollow hole 2, there is also a stop 14, which corresponds to the first limiting groove 9, the second limiting groove 10, and the third limiting groove 11. The two ends of the stop 14 are fixed to the hole wall of the hollow hole 2. Through the precise correspondence between the stop 14 and the first limiting groove 9, the second limiting groove 10, and the third limiting groove 11, a multi-directional and targeted mechanical block can be formed on the operating handle embedded in the slot, which strengthens the limiting and locking effect of the operating handle in different gear states and prevents it from accidentally slipping or shifting. At the same time, the structure fixed at both ends of the stop 14 enhances the overall structural strength of the sign, avoids the sign from deforming due to long-term use and stress, ensures the durability and anti-misoperation reliability of the locking mechanism, and further improves the stability of the physical locking function.

[0044] See Figure 1 , Figure 2 and Figure 3 In this embodiment, the label is fixed to the operating handle by the first limiting groove 9, the second limiting groove 10, the third limiting groove 11, the first magnetic strip 5, the second magnetic strip 6 and the third magnetic strip 7, so that the operating handle cannot be moved or switched until the lock is released, effectively preventing the operating handle from being accidentally operated, ensuring the stable isolation of the maintenance equipment, and protecting the work safety of on-site personnel.

[0045] See Figure 1 , Figure 2 and Figure 3 The specific steps for using the locking sign on the electrical operating handle in this embodiment are as follows:

[0046] Step 1: Hang the sign. First, switch the operating handle to the corresponding state, and then fix the sign plate 1 of the sign to the operating handle through several limiting slots 4. The sign is attached to the base of the operating handle or the cabinet door by the first magnetic strip 5, the second magnetic strip 6 and the third magnetic strip 7 on the back.

[0047] Step 2: Remove the sign. Before switching the handle, remove the sign to unlock the handle, and then switch the operating handle.

[0048] See Figure 1 , Figure 2 and Figure 3 In this embodiment, by integrating a mechanical locking structure into the sign, the sign achieves both warning and physical locking functions.

[0049] See Figure 1 , Figure 2 and Figure 3In this embodiment, the label is fixed to the operating handle by the first limiting groove 9, the second limiting groove 10, the third limiting groove 11, the first magnetic strip 5, the second magnetic strip 6 and the third magnetic strip 7. The limiting block 3 prevents the operating handle from moving or switching states until the lock is released, effectively preventing the operating handle from being accidentally operated, ensuring the stable isolation of the maintenance equipment and protecting the work safety of on-site personnel.

[0050] See Figure 1 , Figure 2 and Figure 3 In this embodiment, by eliminating the string, problems such as broken hanging wires on the sign are avoided, making the sign more aesthetically pleasing and neat.

[0051] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sign with a locking function applied to an electrical operating handle, characterized in that: Including signboard (1); The top surface of the label plate (1) has a hollow hole (2) at the center, and a limiting block (3) is provided inside the hollow hole (2). The limiting block (3) is fixed on the inner wall of the hollow hole (2). The limiting block (3) has a plurality of limiting slots (4), the plurality of limiting slots (4) penetrate the label plate (1), and the plurality of limiting slots (4) are evenly distributed along the circumference of the hollow hole (2).

2. A sign with a locking function applied to an electrical operating handle according to claim 1, characterized in that: The signboard (1) has a rectangular structure.

3. A sign with a locking function applied to an electrical operating handle according to claim 1, characterized in that: The bottom surface of the label plate (1) is provided with a first magnetic strip (5), a second magnetic strip (6) and a third magnetic strip (7), and the first magnetic strip (5), the second magnetic strip (6) and the third magnetic strip (7) are all fixedly installed on the bottom surface of the label plate (1).

4. A sign with a locking function applied to an electrical operating handle according to claim 1, characterized in that: The top surface of the signboard (1) is also provided with a warning slogan area (8), which is located at the lower part of the limiting block (3).

5. A sign with a locking function applied to an electrical operating handle according to claim 1, characterized in that: The plurality of the limiting slots (4) have a first limiting slot (9), a second limiting slot (10) and a third limiting slot (11), the slot directions of the first limiting slot (9), the second limiting slot (10) and the third limiting slot (11) intersect each other, and the first limiting slot (9), the second limiting slot (10) and the third limiting slot (11) all penetrate the label plate (1).

6. A sign with a locking function applied to an electrical operating handle according to claim 5, characterized in that: The first limiting groove (9), the second limiting groove (10) and the third limiting groove (11) are respectively provided with a first limiting strip (12) and a second limiting strip (13) between adjacent grooves. The first limiting strip (12) and the second limiting strip (13) are both perpendicular to the label plate (1) and fixedly connected to the hole wall of the hollow hole (2).

7. A sign with a locking function applied to an electrical operating handle according to claim 6, characterized in that: The hollow hole (2) is also provided with a stop (14), which corresponds to the first limiting groove (9), the second limiting groove (10) and the third limiting groove (11). The two ends of the stop (14) are respectively fixed on the hole wall of the hollow hole (2).

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