Explosion-proof distribution box

Abstract

The invention discloses an explosion-proof distribution box which comprises a box body, a box door and an electrical element, the electrical element is located in the box body, the side portion of the box door is hinged to the box body through a hinge shaft, a master control switch of the electrical element is arranged on the box door, the master control switch is of a knob type, and the electrical element is arranged on the box door. A protruding point is arranged on a central shaft of the master control switch, a pressing bolt and a fixing ring are arranged on the box door, a pressing plate is arranged on the top of the pressing bolt, a reset spring is arranged on the pressing bolt, the upper end of the reset spring is clamped by the pressing plate, the lower end of the reset spring is pressed by the fixing ring in an abutting mode, an inserting hole is formed in the bottom of the box body, and the inserting hole is communicated with the pressing plate. The pressing plug pin and the inserting hole are correspondingly arranged, and the reset spring can enable the bottom end of the pressing plug pin to be separated from the inserting hole in the natural state. By arranging the box body, the box door and the electrical elements, the explosion-proof distribution box can be opened only under the condition of power failure, and the operation safety is effectively ensured.

Description

Technical Field

[0001] The invention relates to the technical field of distribution box devices, and in particular to an explosion-proof distribution box. Background Art

[0002] Lighting distribution box is a basic power distribution device that rationally combines current operated protectors and air circuit breakers to achieve centralized control of household power supply, as well as protection functions such as grounding, overload, and short circuit. It also has busbars for protective grounding and neutral lines to facilitate the wiring of various low-voltage distribution systems. Lighting distribution boxes are widely used in various buildings, squares, stations, industrial and mining enterprises, etc., as terminal electrical equipment of the distribution system.

[0003] After a period of use, the lighting distribution box usually needs to be opened for maintenance. To ensure safe operation, the internal electrical components must be powered off before opening the door. If electronic components are used for control, they need to be powered on and cannot be completely powered off, and the cost of electronic components is relatively high. Therefore, it is necessary to improve the structure of the distribution box, requiring that the door of the distribution box cannot be opened when the power is on, and can only be opened when the power is off. Summary of the invention

[0004] The purpose of the present invention is to provide an explosion-proof distribution box to solve the above problems existing in the prior art.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] An explosion-proof distribution box of the present invention comprises a box body, a box door and an electrical component, wherein the electrical component is located inside the box body, the side of the box door is hinged to the box body through a hinge shaft, the main control switch of the electrical component is arranged on the box door, the main control switch is a knob type, a convex point is arranged on the central axis of the main control switch, a pressable latch and a fixing ring are arranged on the box door, a pressing plate is arranged on the top of the pressable latch, a reset spring is arranged on the pressable latch, the upper end of the reset spring is clamped by the pressing plate and the lower end is pressed by the fixing ring, a jack is arranged at the bottom of the box body, and the The pushable latch is arranged corresponding to the socket, and the return spring can make the bottom end of the pushable latch disengage from the socket in the natural state. When the main control switch is in the closed state, the protrusion is located directly above the pushable latch and presses the pushable latch downward so that the bottom end of the pushable latch is inserted into the socket, and the door cannot be opened at this time; when the main control switch is in the open state, the protrusion disengages from the pushable latch, and under the action of the rebound force of the return spring, the pushable latch bounces upward and the bottom end disengages from the socket, and the door can be opened at this time.

[0007] Furthermore, the pressing plate is arc-shaped or triangular.

[0008] Furthermore, a visible transparent window is provided on the box door, and the visible transparent window is explosion-proof glass.

[0009] Compared with the prior art, the beneficial technical effects of the present invention are:

[0010] The explosion-proof distribution box of the present invention is provided with a box body, a box door and electrical components. When the box door is closed, the main control switch is rotated to close the circuit and realize power-on. At this time, the protrusion is opposite to the top of the pushable plug, and the protrusion presses the pushable plug downward. The bottom end of the pushable plug is inserted into the corresponding socket of the box body, and the box door is locked. When the box door needs to be opened, the main control switch is rotated to disconnect the circuit and realize power-off. The protrusion is separated from the pushable plug. Under the resilience of the reset spring, the bottom of the pushable plug is separated from the socket, and the box door can be opened.

[0011] The present invention can realize that the explosion-proof distribution box can be opened only in a power-off state by arranging the box body, the box door and the electrical components, thereby effectively ensuring the safety of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a structural schematic diagram of the explosion-proof distribution box of the present invention;

[0014] Figure 2 It is a structural schematic diagram of the explosion-proof distribution box of the present invention when the main control switch is closed and the protrusion is pressed downward to depress the plug;

[0015] Figure 3 It is a schematic structural diagram of the explosion-proof distribution box of the present invention when the main control switch is disconnected and the protrusion is separated from the depressible plug.

[0016] Explanation of the reference numerals: 1. Box body; 11. Fixing ring; 2. Box door; 21. Visible transparent window; 3. Electrical component; 4. Main control switch; 5. Pressable latch; 51. Return spring; 52. Pressing plate. DETAILED DESCRIPTION

[0017] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0018] In the description of the present invention, it is necessary to understand that the terms "length", "width", "inside", "outside", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] The technical solution provided by the embodiments of the present invention is described in detail below with reference to the accompanying drawings.

[0021] like Figures 1 to 3 As shown, the explosion-proof distribution box of the embodiment of the present invention comprises a box body 1, a box door 2 and an electrical component 3, wherein the electrical component 3 is located inside the box body 1, and the side of the box door 2 is hinged to the box body 1 through a hinge shaft. The main control switch 4 of the electrical component 3 is arranged on the box door 2, and the main control switch 4 is a knob type, and a convex point is arranged on the central axis of the main control switch 4. The box door 2 is provided with a pressable latch 5, and the pressable latch 5 is provided with a reset spring 51, and a socket is arranged at the bottom of the box body 1. The lower end of the reset spring 51 is pressed by the fixing ring 11 on the box door 2, and when the reset spring 51 is in a natural state, the bottom end of the pressable latch 5 is disengaged from the socket.

[0022] In this embodiment, when the main control switch 4 is in the closed state, the protrusion is located directly above the pushable latch 5, and the protrusion presses the pushable latch 5 downward, and the bottom end of the pushable latch 5 is inserted into the socket. At this time, the box door 2 cannot be opened; when the main control switch 4 is in the disconnected state, the protrusion is disengaged from the pushable latch 5, and under the rebound force of the reset spring 51, the pushable latch 5 is bounced upward, and the bottom end of the pushable latch 5 is disengaged from the socket. At this time, the box door 2 can be opened to ensure safe operation.

[0023] A pressing plate 52 is provided on the top of the depressible latch 5, and the pressing plate 52 is arc-shaped or triangular. The upper end of the return spring 51 is clamped by the pressing plate 52, and when the main control switch 4 rotates, the convex point on the central axis rotates with the central axis, and the convex point is directly pressed onto the pressing plate 52. Under the load of the pressing plate 52, the convex point and the depressible latch 5 can be positively connected.

[0024] And, be provided with visible transparent window 21 on the box door 2, and visible transparent window 21 is explosion-proof glass. Can observe its internal condition through visible transparent window 21, when needing to overhaul, then open the box door 2.

[0025] The present invention can realize that the explosion-proof distribution box can be opened only in a power-off state by arranging the box body, the box door and the electrical components, thereby effectively ensuring the safety of operation.

[0026] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. An explosion-proof distribution box, characterized in that: The utility model comprises a box body, a box door and an electrical component, wherein the electrical component is located inside the box body, the side of the box door is hinged to the box body through a hinge shaft, the main control switch of the electrical component is arranged on the box door, the main control switch is a knob type, a convex point is arranged on the central axis of the main control switch, a pushable latch and a fixing ring are arranged on the box door, a pressing plate is arranged on the top of the pushable latch, a reset spring is arranged on the pushable latch, the upper end of the reset spring is clamped by the pressing plate and the lower end is pressed by the fixing ring, a jack is arranged at the bottom of the box body, and the pushable latch is pressed by the pressing plate. The reset spring is arranged corresponding to the socket and can make the bottom end of the pushable pin disengage from the socket in the natural state. When the main control switch is in the closed state, the protrusion is located directly above the pushable pin and presses the pushable pin downward so that the bottom end of the pushable pin is inserted into the socket. At this time, the door cannot be opened. When the main control switch is in the open state, the protrusion disengages from the pushable pin. Under the action of the rebound force of the reset spring, the pushable pin bounces upward and the bottom end disengages from the socket. At this time, the door can be opened.

2. The explosion-proof distribution box according to claim 1, characterized in that: The pressing plate is arc-shaped or triangular.

3. The explosion-proof distribution box according to claim 1 or 2, characterized in that: The box door is provided with a visible transparent window, and the visible transparent window is explosion-proof glass.

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