Button operating mechanism for explosion-proof electrical control box

Abstract

This utility model provides a button operating mechanism for an explosion-proof electrical control box, belonging to the technical field of electrical engineering and safety. It includes an electrical mechanism: a box housing for storing electrical components, a door hinged to the outside of the box, and a switch assembly for controlling the circuit; a clamping mechanism including a housing for supporting components and a connecting rod movably mounted at one end of the housing. This utility model, through the use of a double-layer sealing ring and a snap-fit ​​design, forms a double sealing barrier, enhancing the sealing effect and preventing dust, moisture, or corrosive gases from seeping into the interior, reducing the risk of short circuits or fires. The clamping mechanism, through the cooperation of the clamping claws and the return spring, ensures stable clamping of the button body, preventing displacement of the double-layer sealing ring due to long-term use or environmental changes. The tightness adjustment mechanism, through precise adjustment of the threaded screw and lever, maintains appropriate tension in the clamping claws, ensuring that the double-layer sealing ring is always in optimal working condition.

Description

Technical Field

[0001] This utility model belongs to the technical field of electrical engineering and safety, and specifically relates to a button operating mechanism for an explosion-proof electrical control box. Background Technology

[0002] The push-button operating mechanism for explosion-proof electrical control boxes is a control device specifically designed for flammable and explosive environments, and is widely used in high-risk industries such as petroleum, chemical, and mining. Its core function is to enable the start-up, shutdown, and switching of electrical equipment while ensuring safety.

[0003] Currently, loose seals are a potential but serious problem in the button operating mechanism of explosion-proof electrical control boxes. This is usually caused by long-term use, changes in ambient temperature, or material aging, which leads to the loss of elasticity or deformation of the sealing ring, resulting in a decrease in sealing performance. This loosening can allow external dust, moisture, or corrosive gases to seep into the interior, not only affecting the normal operation of the buttons but also potentially damaging the insulation performance of electrical components, increasing the risk of short circuits or fires. Because loose seals are often not easily detected in the early stages, the problem may gradually worsen, eventually endangering the explosion-proof performance and safe operation of the equipment. Utility Model Content

[0004] The purpose of this utility model is to provide a button operating mechanism for an explosion-proof electrical control box, which aims to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A push-button operating mechanism for an explosion-proof electrical control box includes,

[0007] Electrical mechanism, including a housing for housing electrical components, a door hinged to the outside of the housing, and a switching assembly for controlling the circuit;

[0008] The clamping mechanism includes a housing for carrying the part, a connecting rod movably mounted at one end of the housing, a limiting piece fixedly mounted at the end of the connecting rod, and a return spring fixedly mounted on the outside of the limiting piece;

[0009] And a tightness adjustment mechanism for use in conjunction with the clamping mechanism.

[0010] As a preferred embodiment of this utility model, the clamping mechanism further includes a telescopic rod movably sleeved in the inner cavity of the return spring, a clamping claw fixedly installed at one end of the telescopic rod, and a guide plate fixedly installed on the inner wall of the housing for limiting the return spring.

[0011] As a preferred embodiment of this utility model, the switch assembly includes a button body fixedly installed on the outside of the box door, a double-layer sealing ring fixedly installed on the outside of the button body and movably sleeved at the opening on the outside of the box door, a buckle fixedly installed on the outside of the double-layer sealing ring for fixing the button body, and a protrusion fixedly installed on the outside of the button body.

[0012] As a preferred embodiment of this utility model, the tightness adjustment mechanism includes a bracket fixedly installed in the inner cavity of the box, a swing rod hinged in the inner cavity of the bracket, and a first rotating shaft and a second rotating shaft respectively rotatably installed on the upper and lower sides of the inner cavity of the swing rod.

[0013] As a preferred embodiment of this utility model, the tightness adjustment mechanism further includes a pull rod hinged to the second rotating shaft, a threaded screw threaded onto the outside of the housing, and a hand lever for rotating the threaded screw.

[0014] In a preferred embodiment of this utility model, the threaded screw passes through one side of the housing and is threadedly connected to the housing.

[0015] In a preferred embodiment of this utility model, one end of the pulling rod is fixedly connected to the end of the connecting rod, and the clamping claw is movably sleeved on the outside of the protrusion.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: by adopting a double-layer sealing ring and buckle design, a double sealing barrier is formed, which enhances the sealing effect, prevents dust, moisture or corrosive gases from penetrating into the interior, and reduces the risk of short circuit or fire. The clamping mechanism, through the cooperation of the clamping claw and the return spring, ensures the stable clamping of the button body and prevents the double-layer sealing ring from shifting due to long-term use or environmental changes. The tightness adjustment mechanism, through the precise adjustment of the threaded screw and the lever, keeps the clamping claw with appropriate tension, ensuring that the double-layer sealing ring is always in the best working condition. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a partial sectional view of the box structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the clamping mechanism and tightness adjustment mechanism of this utility model;

[0021] Figure 4 This is a partial cross-sectional view of the shell structure of this utility model;

[0022] Figure 5 This is a partial schematic diagram of the box structure of this utility model from another perspective.

[0023] In the diagram: 100, Electrical mechanism; 110, Housing; 120, Door; 130, Switch assembly; 131, Button body; 132, Double-layer sealing ring; 133, Buckle; 134, Protrusion; 200, Clamping mechanism; 210, Housing; 220, Connecting rod; 230, Limiting plate; 240, Return spring; 250, Telescopic rod; 260, Clamping claw; 270, Guide plate; 300, Tightness adjustment mechanism; 310, Bracket; 320, Swing rod; 330, First rotating shaft; 340, Second rotating shaft; 350, Pulling rod; 360, Threaded screw; 370, Hand lever. Detailed Implementation

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0027] Example: Refer to Figures 1-5 This is an embodiment of the present invention, which provides a button operating mechanism for an explosion-proof electrical control box, comprising:

[0028] The electrical mechanism 100 includes a housing 110 for housing electrical components, a door 120 hinged to the outside of the housing 110, and a switch assembly 130 for controlling the circuit.

[0029] The clamping mechanism 200 includes a housing 210 for carrying parts, a connecting rod 220 movably installed at one end of the housing 210, a limiting piece 230 fixedly installed at the end of the connecting rod 220, and a return spring 240 fixedly installed on the outside of the limiting piece 230.

[0030] And a tightness adjustment mechanism 300 used in conjunction with the clamping mechanism 200.

[0031] The clamping mechanism is fixed to the protrusion 134 on the outside of the button body 131 by the clamping claw 260. Combined with the rotation of the threaded screw 360 in the tightness adjustment mechanism, the tension of the clamping claw is adjusted. This design ensures stable clamping of the button body 131 and prevents the double sealing ring 132 from shifting due to long-term use or environmental changes. This significantly improves the sealing performance, prevents external dust, moisture or corrosive gases from seeping into the interior, and reduces the risk of short circuit or fire.

[0032] Specifically, the clamping mechanism 200 also includes a telescopic rod 250 movably sleeved in the inner cavity of the return spring 240, a clamping claw 260 fixedly installed at one end of the telescopic rod 250, and a guide plate 270 fixedly installed on the inner wall of the housing 210 for limiting the return spring 240.

[0033] The cooperation between the reset spring 240 and the guide plate 270 ensures that the clamping mechanism can automatically reset after operation, while limiting the displacement range of the reset spring.

[0034] Furthermore, the switch assembly 130 includes a button body 131 fixedly installed on the outside of the door 120, a double-layer sealing ring 132 fixedly installed on the outside of the button body 131 and movably sleeved at the opening on the outside of the door 120, a buckle 133 fixedly installed on the outside of the double-layer sealing ring 132 for fixing the button body 131, and a protrusion 134 fixedly installed on the outside of the button body 131.

[0035] The double-layer sealing ring 132 is fixedly installed on the outside of the button body 131 and movably fitted into the opening of the door 120, forming a double sealing barrier. This design enhances the sealing effect and can effectively prevent the sealing ring from aging or deforming even in high vibration, high humidity or corrosive environments, ensuring long-term stable explosion-proof performance. The button body 131 is fixed to the outside of the double-layer sealing ring 132 by the buckle 133, ensuring a tight connection between the button and the sealing ring. This fixing method not only simplifies the installation and maintenance process, but also further improves the stability of the sealing ring and prevents sealing failure due to loosening.

[0036] Preferably, the tightness adjustment mechanism 300 includes a bracket 310 fixedly installed in the inner cavity of the housing 110, a rocker arm 320 hinged in the inner cavity of the bracket 310, and a first rotating shaft 330 and a second rotating shaft 340 respectively rotatably installed on the upper and lower sides of the inner cavity of the rocker arm 320. The tightness adjustment mechanism 300 also includes a pull rod 350 hinged to the second rotating shaft 340, a threaded screw 360 threaded on the outside of the housing 110, and a handle 370 for rotating the threaded screw 360. The threaded screw 360 passes through one side of the housing 110 and is threadedly connected to the housing 110.

[0037] The pull rod 350 is fixedly connected to the connecting rod 220, and the threaded screw 360 is rotated by the hand lever 370 to achieve precise adjustment of the pulling force of the clamping claw 260. This design enables the operating mechanism to adapt to different environments and usage conditions, ensuring that the sealing ring is always in the best working condition, while facilitating daily maintenance and adjustment.

[0038] Furthermore, one end of the pull rod 350 is fixedly connected to the end of the connecting rod 220, and the clamping claw 260 is movably sleeved on the outside of the protrusion 134.

[0039] The clamping claw 260 can be directly engaged on the outside of the protrusion 134 to ensure the overall fixation of the switch assembly 130.

[0040] In use, when the button body 131 is operated, the clamping claw 260 is fixed to the outside of the protrusion 134 by the clamping mechanism 200 to ensure stable operation of the button; the tightness adjustment mechanism 300 drives the threaded screw 360 to move by rotating the lever 370, and then adjusts the tension of the clamping claw 260 by pulling the lever 350 and the connecting rod 220, so that the double sealing ring 132 always keeps tightly fitted and prevents the seal from loosening; the cooperation of the return spring 240 and the guide plate 270 ensures that the clamping mechanism automatically resets after operation, limits the spring displacement, and improves the stability of the mechanism;

[0041] The double-layer sealing ring 132 is always moving and fitted at the opening of the door 120 during button operation, forming a double sealing barrier to effectively prevent external contaminants from entering the interior of the box. The overall structure ensures that the button operating mechanism maintains high sealing and explosion-proof performance during long-term use through the tight cooperation between the components, while also facilitating daily maintenance and adjustment.

[0042] In summary, the switch assembly 130 adopts a double-layer sealing ring 132 and a snap-fit ​​133 design to form a double sealing barrier, which enhances the sealing effect, prevents dust, moisture or corrosive gases from penetrating into the interior, and reduces the risk of short circuit or fire. The clamping mechanism 200, through the cooperation of the clamping claw 260 and the return spring 240, ensures the stable clamping of the button body 131 and prevents the double-layer sealing ring 132 from shifting due to long-term use or environmental changes. The tightness adjustment mechanism 300, through the precise adjustment of the threaded screw 360 and the lever 370, keeps the clamping claw 260 under appropriate tension, ensuring that the double-layer sealing ring 132 is always in the best working condition.

[0043] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0044] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0045] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0046] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A button operating mechanism for an explosion-proof electrical control box, characterized in that: include, The electrical mechanism (100) includes a housing (110) for housing electrical components, a door (120) hinged to the outside of the housing (110), and a switch assembly (130) for controlling the circuit. The clamping mechanism (200) includes a housing (210) for carrying the parts, a connecting rod (220) movably mounted on one end of the housing (210), a limiting piece (230) fixedly mounted on the end of the connecting rod (220), and a return spring (240) fixedly mounted on the outside of the limiting piece (230). And a tightness adjustment mechanism (300) for use in conjunction with the clamping mechanism (200).

2. The push-button operating mechanism for an explosion-proof electrical control box according to claim 1, characterized in that: The clamping mechanism (200) further includes a telescopic rod (250) movably sleeved in the inner cavity of the return spring (240), a clamping claw (260) fixedly installed at one end of the telescopic rod (250), and a guide plate (270) fixedly installed on the inner wall of the housing (210) for limiting the return spring (240).

3. The push-button operating mechanism for an explosion-proof electrical control box according to claim 2, characterized in that: The switch assembly (130) includes a button body (131) fixedly installed on the outside of the door (120), a double-layer sealing ring (132) fixedly installed on the outside of the button body (131) and movably sleeved at the opening on the outside of the door (120), a buckle (133) fixedly installed on the outside of the double-layer sealing ring (132) for fixing the button body (131), and a protrusion (134) fixedly installed on the outside of the button body (131).

4. The push-button operating mechanism for an explosion-proof electrical control box according to claim 3, characterized in that: The tightness adjustment mechanism (300) includes a bracket (310) fixedly installed in the inner cavity of the housing (110), a rocker arm (320) hinged in the inner cavity of the bracket (310), and a first rotating shaft (330) and a second rotating shaft (340) respectively rotatably installed on the upper and lower sides of the inner cavity of the rocker arm (320).

5. The push-button operating mechanism for an explosion-proof electrical control box according to claim 4, characterized in that: The tightness adjustment mechanism (300) further includes a pull rod (350) hinged to the second rotating shaft (340), a threaded screw (360) threaded onto the outside of the housing (110), and a lever (370) for rotating the threaded screw (360).

6. The push-button operating mechanism for an explosion-proof electrical control box according to claim 5, characterized in that: The threaded screw (360) passes through one side of the housing (110) and is threadedly connected to the housing (110).

7. The push-button operating mechanism for an explosion-proof electrical control box according to claim 6, characterized in that: One end of the pull rod (350) is fixedly connected to the end of the connecting rod (220), and the clamping claw (260) is movably sleeved on the outside of the protrusion (134).

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