Explosion-proof circuit breaker switchgear

Abstract

This utility model relates to the technical field of circuit breakers and discloses an explosion-proof circuit breaker switching device, including a housing mounted on the circuit breaker. The housing encloses a chamber to accommodate the circuit breaker. A laterally movable component is provided in the chamber. The movable component is connected to a knob via a transmission structure. The knob is exposed on the housing. The movable component has a mounting slot for the circuit breaker's on / off switch to be inserted. When the knob is rotated, the transmission structure drives the movable component to move laterally, and the mounting slot moves laterally with the movable component, driving the circuit breaker's on / off switch to swing. Thus, the circuit breaker can be controlled to open and close simply by rotating the knob, simplifying the switching device design and making operation more convenient and safer.

Description

Technical Field

[0001] This utility model relates to the technical field of circuit breakers, and more particularly to explosion-proof circuit breaker switching devices. Background Technology

[0002] In flammable and explosive high-risk working environments such as petroleum, chemical, and coal mines, electrical sparks and high temperatures generated during the operation of electrical equipment may cause explosions or fires, seriously threatening life and property safety. Therefore, explosion-proof circuit breakers have become key equipment to ensure the safe operation of electrical systems.

[0003] In existing technologies, explosion-proof circuit breaker switching devices suffer from complex structures, which brings numerous inconveniences and challenges to practical applications. Many existing devices employ a large number of linkages, gears, brackets, and other transmission components to transmit operating actions. For example, multi-stage linkage mechanisms or complex bracket structures are set between the handle and the moving contact to drive the rotation of the moving contact and realize the connection and disconnection of the circuit. However, this design results in a large number of parts in the entire device, and the assembly relationships between these parts are intricate. During long-term use, these numerous parts are prone to failure due to wear, deformation, and other reasons. If a linkage or gear malfunctions, the entire operating mechanism may fail to function properly, affecting the circuit breaker's protection function. Utility Model Content

[0004] The purpose of this invention is to provide an explosion-proof circuit breaker switching device, which aims to solve the problem of complex structure in existing explosion-proof circuit breaker switching devices.

[0005] The technical solution of this utility model is: an explosion-proof circuit breaker switch device, including a housing installed on the circuit breaker, the housing enclosing a cavity for accommodating the circuit breaker, a laterally movable component in the cavity, the movable component being connected to a knob via a transmission structure, the knob being exposed on the housing; the movable component having an insert groove for the circuit breaker switch to be inserted.

[0006] When the knob is turned, the moving part is driven to move laterally through the transmission structure. The mounting slot moves laterally with the moving part, driving the circuit breaker switch to swing.

[0007] As a further improvement to this technical solution, a guide bracket is provided in the chamber, the guide bracket is fixedly connected to the shell, a guide rail is provided on the guide bracket, the guide rail extends laterally, and the moving part slides with the guide rail.

[0008] As a further improvement to this technical solution, the transmission structure includes a gear component with teeth on its outer periphery, and a rack on the moving component, the rack extending along the length of the moving component, the teeth meshing with the rack.

[0009] When the gear rotates, the teeth make circular motion, which drives the rack to move linearly through meshing, and the moving part moves linearly.

[0010] As a further improvement to this technical solution, the housing is provided with a mounting hole, the gear component has an upwardly protruding gear shaft in the middle, the upper part of the gear shaft passes through the mounting hole to form an upper extension, and the knob is fixedly mounted on the upper extension.

[0011] As a further improvement to this technical solution, a bushing is also fitted onto the mounting hole. The bushing is arranged circumferentially around the gear shaft and is fixedly arranged between the side wall of the mounting hole and the gear shaft, so that the gear shaft is connected to the housing.

[0012] As a further improvement to this technical solution, the outer periphery of the upper extension has a recessed outer circumferential groove, the outer circumferential groove is arranged around the upper extension in the circumferential direction, an elastic retaining ring is installed and fixed on the outer circumferential groove, and the knob is provided with an annular groove.

[0013] The elastic retaining ring is mounted on the outer circumferential groove via an annular groove to restrict the knob from moving axially along the gear shaft.

[0014] As a further improvement to this technical solution, the housing is provided with a fixed fastener, the fastener is provided with a fixing hole, and the knob is provided with a mating hole that matches the diameter of the fixing hole. The mating hole and the fixing hole are at the same horizontal height.

[0015] As a further improvement to this technical solution, the bottom of the chamber has a bottom opening for the circuit breaker to be embedded.

[0016] As a further improvement to this technical solution, the bottom of the movable part protrudes downward to form two spaced-apart snap-fit ​​protrusions, and the two snap-fit ​​protrusions spaced apart to form the mounting slot.

[0017] As a further improvement to this technical solution, the housing is provided with a plurality of reserved holes for communicating chambers, and fillers are installed in the reserved holes.

[0018] Compared with the prior art, the explosion-proof circuit breaker switch device provided by this utility model uses a transmission structure to drive the movement of the moving parts, thereby causing the circuit breaker switch to swing. The circuit closure can be controlled simply by turning the knob, which simplifies the design of the switch device, makes the operation more convenient and safe, and facilitates later maintenance. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in 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.

[0020] Figure 1 This is a three-dimensional schematic diagram of the explosion-proof circuit breaker switch device provided in this embodiment of the utility model;

[0021] Figure 2 This is an exploded schematic diagram of the explosion-proof circuit breaker switch device provided in this embodiment of the utility model;

[0022] Figure 3 This is provided by the embodiment of the present utility model. Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 This is a cross-sectional schematic diagram of the explosion-proof circuit breaker switching device provided in this embodiment of the utility model;

[0024] Figure 5 This is a cross-sectional schematic diagram of the explosion-proof circuit breaker switching device provided in this embodiment of the utility model;

[0025] Figure 6 This is a cross-sectional view of the mounting hole provided in an embodiment of the present invention. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0027] It should be noted that the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to direct setup or connection, or indirect setup or connection through centered components or centered structures.

[0028] Furthermore, in embodiments of this utility model, terms such as "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" are used to indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, or in a conventional placement or usage state. These terms are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the structure, feature, device, or element referred to must have a specific orientation or positional relationship, nor that it must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0029] The various specific technical features and embodiments described in the detailed embodiments can be combined in any suitable manner without contradiction. For example, different implementation methods can be formed by combining different specific technical features / embodiments. In order to avoid unnecessary repetition, the various possible combinations of the various specific technical features / embodiments in this utility model will not be described separately.

[0030] Reference Figures 1-6 The image shown is a preferred embodiment of the present invention.

[0031] The explosion-proof circuit breaker switch device provided by this utility model includes a housing 100 installed on the circuit breaker. The housing 100 encloses a chamber 101 for accommodating the circuit breaker. A laterally movable component 600 is provided in the chamber 101. The movable component 600 is connected to a knob 200 through a transmission structure. The knob 200 is exposed on the housing 100. The movable component 600 has an insert groove for the circuit breaker switch to be inserted.

[0032] When the knob 200 is turned, the moving part 600 is driven to move laterally through the transmission structure. The mounting slot moves laterally with the moving part 600, driving the circuit breaker switch to swing, thereby driving the circuit breaker switch to complete the swinging action.

[0033] The explosion-proof circuit breaker switch device provided above uses a transmission structure to drive the movement of the moving part 600, which in turn drives the circuit breaker switch to swing. The circuit can be closed simply by turning the knob 200, which simplifies the design of the switch device, makes the operation more convenient and safe, and facilitates later maintenance.

[0034] A guide bracket 500 is provided in the chamber 101. The guide bracket 500 is fixedly connected to the housing 100. A guide rail 501 is provided on the guide bracket 500. The guide rail 501 extends laterally. The moving part 600 slides with the guide rail 501. In this way, the movement trajectory of the moving part 600 is designed by fixing the guide bracket 500 in the chamber 101.

[0035] Specifically, the guide bracket 500 is fixed to the housing 100 by screws.

[0036] Specifically, the moving part 600 and the guide rail 501 form a sliding fit with a gap of 0.05-0.1mm.

[0037] In this embodiment, the transmission structure includes a gear component 400, the outer periphery of which is provided with teeth, and a rack 610 is provided on the moving component 600. The rack 610 extends along the length direction of the moving component 600, and the teeth mesh with the rack 610.

[0038] When gear 400 rotates, the teeth make circular motion, which drives rack 610 to move linearly through meshing, and moving component 600 linearly. In this way, transmission is achieved through teeth and rack 610, and the structure is simple.

[0039] Specifically, the number of teeth is determined based on the required length of movement.

[0040] The housing 100 has a mounting hole 102, and the gear component 400 has an upwardly protruding gear shaft 410 in the middle. The upper part of the gear shaft 410 passes through the mounting hole 102 to form an upper extension, and the knob 200 is fixedly mounted on the upper extension. In this way, rotating the knob 200 can directly drive the gear shaft 410 to rotate, which is simple and reliable.

[0041] Specifically, to ensure effective force transmission, the upper extension has a polygonal cross-section that matches the mounting profile on the knob 200.

[0042] A bushing 300 is also fitted onto the mounting hole 102. The bushing 300 is arranged circumferentially around the gear shaft 410 and is fixedly positioned between the side wall of the mounting hole 102 and the gear shaft 410, connecting the gear shaft 410 to the housing 100. In this way, the bushing 300 ensures a tight seal at the mounting hole 102 and effectively prevents the gear shaft 410 from shaking.

[0043] Specifically, the bushing 300 is fixedly arranged between the side wall of the mounting hole 102 and the gear shaft 410 by an interference fit.

[0044] In this embodiment, the outer periphery of the upper extension has a recessed outer circumferential groove, which is arranged circumferentially around the upper extension. An elastic retaining ring 411 is installed and fixed on the outer circumferential groove, and the knob 200 is provided with an annular groove 201.

[0045] The elastic retaining ring 411 is mounted on the outer circumferential groove via the annular groove 201 to restrict the axial movement of the knob 200 along the gear shaft 410. This prevents the knob 200 from disengaging from the housing 100.

[0046] Specifically, the elastic retaining ring 411 can be a snap ring.

[0047] In a preferred embodiment, the housing 100 is provided with a fixedly arranged fastener 210, which has a fixing hole 211. The knob 200 has a mating hole 202 that matches the diameter of the fixing hole 211, and the mating hole 202 and the fixing hole 211 are at the same horizontal level. In this way, the knob 200 can be fixed by a lock, which passes through the mating hole 202 and the fixing hole 211 to lock the knob 200 and prevent the circuit breaker from being turned on arbitrarily.

[0048] The bottom of the chamber 101 has a bottom opening for the circuit breaker to be inserted. This facilitates the installation between the housing 100 and the circuit breaker.

[0049] Specifically, the bottom of the movable component 600 protrudes downward to form two spaced-apart snap-fit ​​protrusions 620, which together form an insert groove. This facilitates the connection between the movable component 600 and the circuit breaker switch.

[0050] In a preferred embodiment, the housing 100 is provided with a plurality of reserved holes 103 for communicating chambers 101, and a filler 700 is installed in the reserved holes 103. In this way, by designing one or more reserved holes 103, the transmission structure is set according to the position of the circuit breaker switch during the installation process, so as to realize the direct connection between the mounting slot and the circuit breaker switch.

[0051] Specifically, the filler 700 can be a plastic plug or a metal threaded part, etc., which is installed in the reserved hole 103 through a threaded connection to seal the chamber and prevent dust and liquid from entering.

[0052] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An explosion-proof circuit breaker switch device, characterized by, The device includes a housing mounted on a circuit breaker, the housing enclosing a chamber for accommodating the circuit breaker, a laterally movable component provided in the chamber, the movable component being connected to a knob via a transmission structure, the knob being exposed on the housing; the movable component has an insert slot for inserting a circuit breaker switch. When the knob is turned, the moving part is driven to move laterally through the transmission structure. The mounting slot moves laterally with the moving part, driving the circuit breaker switch to swing.

2. The explosion-proof circuit breaker switch device of claim 1, wherein, The chamber is provided with a guide bracket, which is fixedly connected to the shell. The guide bracket is provided with a guide rail, which extends laterally. The moving part slides with the guide rail.

3. The explosion-proof circuit breaker switch device of claim 1, wherein, The transmission structure includes a gear component with teeth on its outer periphery, and a rack on the moving component. The rack extends along the length of the moving component, and the teeth mesh with the rack. When the gear rotates, the teeth make circular motion, which drives the rack to move linearly through meshing, and the moving part moves linearly.

4. The explosion-proof circuit breaker switch device of claim 3, wherein, The housing is provided with a mounting hole, and the gear component has an upwardly protruding gear shaft in the middle. The upper part of the gear shaft passes through the mounting hole to form an upper extension, and the knob is fixedly mounted on the upper extension.

5. The explosion-proof circuit breaker switch device of claim 4, wherein, A bushing is also fitted onto the mounting hole. The bushing is arranged circumferentially around the gear shaft and is fixedly positioned between the side wall of the mounting hole and the gear shaft, thereby connecting the gear shaft to the housing.

6. The explosion-proof circuit breaker switch device of claim 4, wherein, The upper extension has a recessed outer circumference groove on its outer periphery, the outer circumference groove is arranged around the upper extension in a circumferential direction, an elastic retaining ring is installed and fixed on the outer circumference groove, and the knob is provided with an annular groove. The elastic retaining ring is mounted on the outer circumferential groove via an annular groove to restrict the knob from moving axially along the gear shaft.

7. The explosion-proof circuit breaker switching device as described in claim 1, characterized in that, The housing is provided with a fixed fastener, the fastener has a fixing hole, and the knob has a mating hole that matches the diameter of the fixing hole. The mating hole and the fixing hole are at the same horizontal level.

8. The explosion-proof circuit breaker switching device as described in claim 1, characterized in that, The bottom of the chamber has a bottom opening for the circuit breaker to be inserted.

9. The explosion-proof circuit breaker switching device according to any one of claims 1 to 8, characterized in that, The bottom of the movable component protrudes downward to form two spaced-apart snap-fit ​​protrusions, and the two snap-fit ​​protrusions spaced apart to form the mounting slot.

10. The explosion-proof circuit breaker switching device according to any one of claims 1 to 9, characterized in that, The housing has multiple pre-drilled holes for connecting chambers, and fillers are installed in the pre-drilled holes.

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