CN210957195U - Hot plugging prevention device - Google Patents

Abstract

The utility model relates to an anti-hot-plugging device, which comprises a socket box, a protective cover, a limit switch and a plug-in unit; a power switch capable of automatically cutting off power is arranged in the socket box; the bottom of the socket box is provided with a socket; two fixed brackets are welded at the bottom of the socket box; two sides of the protective cover are hinged to the fixed support through pins; the protective cover makes circular motion by taking the pin as a circle center; the limit switch is fixed at the bottom of the socket box; the limit switch is arranged between the socket and the fixed bracket; the limit switch adopts an inductive limit switch with an inductive contact; the inductive contact is positioned on the motion track of the protective cover; the insert is capable of mating with the socket. The utility model discloses prevent hot plug device through setting up rotatable safety cover and two segmentation plugs to can fundamentally prevent hot plug and the surge impact's that causes problem.

Description

Hot plugging prevention device

Technical Field

The utility model relates to an electrical technology field particularly, relates to an anti-hot plug device.

Background

The navigation equipment is high in electrical degree, multiple in controller types and more in corresponding plug connectors. In daily work, under the conditions of controller debugging, program flashing, calibration or overall fault elimination, the phenomenon of hot plugging and unplugging of a controller plug-in unit due to forgetting to cut off the power supply can occur. And many controllers do not allow live-line operation, and the power switch is turned on only after the connector of the controller is connected, and similarly, the plug-in can be pulled out only after the power switch is turned off. Moreover, the hot plugging causes surge current impact on controller hardware, which causes hardware damage, delays work and even misleads the cause of failure. At present, in order to prevent equipment damage caused by hot plugging, methods of adding photoelectric isolation and magnetoelectric isolation circuits are mostly adopted. The method can bear surge impact to a certain extent and avoid equipment damage. But such methods are passive defense and current technology cannot fundamentally eliminate surge impact.

Therefore, there is a need for a safe, reliable device that is resistant to hot-plug and that automatically shuts down the power supply before the cable plug is unplugged, allowing for safe operation.

SUMMERY OF THE UTILITY MODEL

In order to achieve the purpose of the utility model, the utility model provides an anti-hot-plugging device, which can prevent the problem of electric arc hazard caused by hot plugging fundamentally.

The utility model discloses an anti-hot-plugging device, which is characterized by comprising a socket box, a protective cover, a limit switch and a plug-in unit;

a power switch capable of automatically cutting off power is arranged in the socket box; the power switch capable of automatically cutting off the power supply receives a command sent by an internal circuit of the socket box to automatically open the brake; the bottom of the socket box is provided with a socket;

two fixed brackets are welded at the bottom of the socket box; two sides of the protective cover are hinged to the fixed support through pins; the protective cover makes circular motion by taking the pin as a circle center; the limit switch is fixed at the bottom of the socket box; the limit switch is arranged between the socket and the fixed bracket; the limit switch adopts a magnetoelectric limit switch with an induction contact; the inductive contact is positioned on the motion track of the protective cover; the plug-in unit can be matched with the socket; when the protective cover is in contact with the inductive contact of the inductive limit switch, a circuit can not send a brake opening command to an automatically-powered power switch which is arranged in the socket box through the circuit, and the circuit can be powered on; when the protective cover is not in contact with the inductive contact of the inductive limit switch, the circuit sends a switching-off command to the power switch which is internally arranged in the socket box and automatically powered off, and the circuit is powered off.

Furthermore, the limit switch is fixed at the bottom of the socket box through welding or bolt connection.

Furthermore, the socket box comprises a box door cover, a hanging lug and a wiring terminal;

the box door cover is connected with the socket box through a hinge and arranged on one side of the socket box; the outer wall of the socket box is welded with a plurality of hanging lugs; and the bottom of the socket box is provided with a plurality of wiring terminals.

As a further improvement of the utility model, the inward bent baffle is arranged on the inner upper edge of the protective cover; the blocking sheet can surround the plug-in device, and the situations that the plug-in device is poor in contact or damaged due to bumping and collision can be avoided.

Furthermore, the plug-in components adopt two-section type cylindrical plugs.

As a further improvement of the utility model, the plug-in adopts a two-section type cylindrical plug;

the plug is provided with a plug locking device, and the two-section type cylindrical plug is locked by rotating the plug locking device; the plug locking device can be surrounded by the blocking sheet when the protective cover is in a protective state.

Further, when the protective cover is in a protection state, the protective cover is in contact with the induction contact of the induction limit switch, and the power switch can be switched on; when the protective cover is in a non-protection state, the protective cover is rotated to be in a non-contact state with the induction contact of the induction limit switch, and the power switch is automatically switched off at the moment.

When the plug needs to be pulled out of the socket, the protective cover needs to be pulled to be not in contact with the limit switch, then the plug locking device is loosened, and then the plug is pulled out; when the protective cover is not in contact with the limit switch, the switch action of the limit switch triggers the automatic opening of the superior power switch.

The utility model discloses hot plugging prevention device through setting up the break-make of the automatic control circuit that opens and shuts of rotatable safety cover and limit switch to solved because of the error lead to circuit fault, operational safety low grade problem; compared with the prior art, the utility model discloses still have following advantage:

(1) the structure is simple, and the production and the manufacture are easy;

(2) the device is easy to popularize, and can be transformed on the existing plugging device to implement the utility model;

(3) easy dismounting uses reliably.

Drawings

Fig. 1 is a schematic view of the overall structure of the hot-plugging prevention device of the present invention;

fig. 2 is a schematic back view of the hot-plugging prevention device of the present invention;

FIG. 3 is a schematic view of the protective cover structure of the hot-plugging prevention device of the present invention;

reference numerals: the box comprises a socket box 1, a box door cover 11, a hanging lug 12, a wiring terminal 13 and a socket 14;

the protective cover 2, a pin 21, a fixed bracket 22 and a blocking piece 23;

a two-section type cylindrical plug 3, a plug locking device 31;

and a limit switch 4 is inducted.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

As shown in fig. 1, for the utility model discloses prevent hot plug device's overall structure sketch map, fig. 2 is overall structure back view, and fig. 3 is protection cover structure sketch map.

The utility model discloses hot plugging device is prevented mainly includes socket case 1, safety cover 2, plug 3, response limit switch 4.

The socket box 1 comprises a box door cover 11, a hanging lug 12, a wire terminal 13 and a socket 14.

Further, a power switch capable of automatically powering off is further arranged inside the socket box 1, and the power switch capable of automatically powering off receives a command sent by an internal circuit of the socket box 1 to automatically switch off; the socket box 1 is provided with a socket 14 at the bottom.

As a further improvement of the present invention, the outer wall of the socket box 1 is provided with a plurality of hanging lugs 12 for connecting with other components; a box door cover 11 is further arranged on one side of the socket box 1, and the box door cover 11 is connected with the socket box 1 through a hinge, so that the circuit is convenient to overhaul and dust and impurities are prevented from entering a box body; and a plurality of wiring terminals 13 are arranged at the bottom of the socket box 1.

Further, the bottom of the socket box 1 is also provided with an inductive limit switch 4 for controlling the opening and closing of the circuit; the induction limit switch is fixed at the bottom of the socket box 1 through welding or bolts; the induction limit switch 4 is provided with an induction contact, and can send a command to an automatic power-off power switch arranged in the socket box 1 in time through a built-in circuit; and the inductive contact of the inductive limit switch 4 is positioned on the circular motion track of the protective cover 2.

Further, 2 fixing supports 22 are welded at the bottom of the socket box 1; the protective cover 2 is opened and closed and rotated, so that two sides of the protective cover 2 are hinged on a fixed bracket 22 through pins 21, and a rotating device can be formed. The protective cover 2 is provided with flaps 23 to protect the plug 3.

Furthermore, the plug-in unit adopts a two-section type cylindrical plug 3; the two-section type cylindrical plug 3 is provided with a plug locking device 31 which is used for connecting and locking the two-section type cylindrical plug 3; the two sections of the two-section type cylindrical plug 3 are locked by rotating the plug locking device 31, so that the conditions of poor contact and the like caused by bumping are avoided; the plug locking device 31 can be surrounded by the blocking piece 23 when the protective cover 2 is in a protective state, so that the two-section type cylindrical plug 3 is prevented from being broken down due to collision.

When the protective cover 2 is in a protective state, the protective cover 2 is in contact with the inductive contact of the inductive limit switch 4, and at the moment, the power switch can be switched on; when the protective cover 2 is in a non-protection state, the protective cover 2 and the induction contact of the induction limit switch 4 are rotated to be in a non-contact state, and the power switch is automatically switched off at the moment.

When the two-section type cylindrical plug 3 needs to be pulled out of the socket 14, the protective cover 2 needs to be pulled until the protective cover is not in contact with the induction limit switch 4, then the plug locking device 31 is loosened, and then the two-section type cylindrical plug 3 is pulled out. When the protective cover 2 is not in contact with the induction limit switch 4, the switching action of the induction limit switch 4 triggers the automatic opening of the superior power switch.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the embodiments disclosed, but is capable of numerous equivalents and substitutions without departing from the spirit of the invention, the equivalents and substitutions being limited only by the scope of the appended claims.

Claims (5)

1. The hot-plugging prevention device is characterized by comprising a socket box, a protective cover, a limit switch and a plug-in unit;

a power switch capable of automatically cutting off power is arranged in the socket box; the power switch capable of automatically cutting off the power supply receives a command sent by an internal circuit of the socket box to automatically switch on and switch off; the bottom of the socket box is provided with a socket;

two fixed brackets are welded at the bottom of the socket box; two sides of the protective cover are hinged to the fixed support through pins; the protective cover makes circular motion by taking the pin as a circle center; the limit switch is fixed at the bottom of the socket box; the limit switch is arranged between the socket and the fixed bracket; the limit switch adopts an inductive limit switch with an inductive contact; the inductive contact is positioned on the motion track of the protective cover; the insert is capable of mating with the socket.

2. The hot-plugging prevention device according to claim 1, wherein the limit switch is fixed to the bottom of the socket box by welding or bolting.

3. The hot-plugging prevention device according to claim 1, wherein the outlet box comprises a box door cover, a hanging lug and a wiring terminal;

the box door cover is connected with the socket box through a hinge and arranged on one side of the socket box; the outer wall of the socket box is welded with a plurality of hanging lugs; and the bottom of the socket box is provided with a plurality of wiring terminals.

4. The hot plug prevention device according to claim 1, wherein the inner side of the protection cover is provided with an inward bent stop piece along the inner side.

5. The hot plug prevention device according to claim 1, wherein the plug-in unit is a two-section cylindrical plug;

the plug is provided with a plug locking device, and the two-section type cylindrical plug is locked by rotating the plug locking device; the plug locking device can be surrounded by the blocking sheet when the protective cover is in a protective state.

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