LU100629B1 - Thermal protection wire spool - Google Patents

Abstract

A thermal protection wire spool comprises a support. A handle is arranged on the support to facilitate carrying. The support is provided with a support shaft connected with a winding shaft; baffles are arranged at the two ends of the winding shaft respectively, and the baffle is provided with a patch board. A temperature control switch is disposed in the winding shaft, and a ground wire, a null line and a live wire are led out of the patch board. The live wire is connected with a coil after being connected with the temperature control switch. The null line and the ground wire are connected with the coil. The coil is wound around the winding shaft, and the tail end of the coil is provided with a plug. The wire spool according to the present invention is simple in principle; automatic power off is performed when the temperature inside the wire spool is too high, so that a power line can be protected, to prevent accidents; after the temperature of a wire is reduced, the temperature control switch can be automatically switched on, and the wire spool can continue to be used. As the temperature control switch is not automatically switched off under the conditions of instantaneous overload, misoperation which interferes with a user's judgment will not occur. The wire spool is portable and convenient to move and operate.

Description

THERMAL PROTECTION WIRE SPOOL

BACKGROUND

Technical Field

The present invention relates to the technical field of electric appliances, and in particular to a thermal protection wire spool.

Related Art A patch board with a long power line or a wire spool needs to be used during construction or outdoor operation. Although through the wire spool, the problem of clutter during winding and unwinding of power lines is solved, wires wound together may easily get a fire due to overtemperature when the power lines bear high-power electrical appliances and or are subjected to overload, short circuit, etc.

In the traditional short circuit, overcurrent protection is adopted as overload protection, that is, when a current reaches a preset safety value, a power supply is switched off. However, many electrical appliances need an instantaneous overload function. As a result, many malfunctions occur, so that users consider that the protection is out of order, and thus they give up the use.

Summary

Against the aforementioned shortcomings in the prior art, the objective of the present invention is to provide a thermal protection wire spool.

In order to achieve the aforementioned objective, the following technical solution is adopted according to the present invention: A thermal protection wire spool, comprising a support, where the support is provided with a support shaft connected with a winding shaft; baffles are arranged at the two ends of the winding shaft respectively, where the baffle at one end is close to the support, and the baffle at the other end is provided with a patch board; a temperature control switch is disposed in the winding shaft, and a ground wire, a null line and a live wire are led out of the patch board; the live wire is connected with a live wire in a coil after being connected with the temperature control switch; the null line and the ground wire are connected with a null wire and a ground wire in the coil respectively; the coil is wound around the winding shaft, and the tail end of the coil is provided with a plug.

Furthermore, in the wire spool according to the present invention, the tail end of the support is provided with a handle.

Furthermore, in the wire spool according to the present invention, when the temperature is too high, the temperature control switch is automatically switched off, to protect a power supply.

Furthermore, in the wire spool according to the present invention, the temperature of a wire does not increase significantly under the conditions of instantaneous overload, a temperature controller is not triggered, and the wire spool can continue to operate.

Furthermore, in the wire spool according to the present invention, after the wire is cooled, the temperature control switch is automatically switched on.

The present invention has the beneficial effects that:

The wire spool according to the present invention is simple in principle; automatic power off is performed when the temperature inside the wire spool is too high, so that a power line can be protected, to prevent accidents; after the temperature of the wire is reduced, the temperature control switch can be automatically switched on, and the wire spool can continue to be used. Since the temperature of the wire does not increase significantly under the conditions of instantaneous overload, misoperation which interferes with a user's judgment will not occur. The wire spool is portable and convenient to move and operate.

Brief Description of Drawings FIG. 1 is a schematic external view of an embodiment of the present invention; FIG. 2 is a diagram of connection between a coil and a null line, a live wire, and a ground wire according to an embodiment of the present invention; and FIG. 3 is a diagram of connection between a temperature control switch and a live wire according to an embodiment of the present invention.

Description of Embodiments

Embodiments of the present invention are described in detail below by combination with accompanying drawings, but the present invention can be implemented by multiple different modes limited and covered by the claims.

As shown in FIG. 1 to FIG. 3, a thermal protection wire spool provided by the present invention comprises a support 1, where a handle 2 is arranged at the upper end of the support 1, to facilitate carrying, as shown in Fig. 1; a support shaft 13 is arranged at the middle off the support 1, as shown in FIG. 1; a winding shaft 12 is disposed at the position of the support shaft 13, and a first baffle 3 and a second baffle 4 are positioned at the two ends of the winding shaft 12 respectively; a patch board 5 is arranged at the position of the second baffle 4 and provided with a ground wire 7, a null wire 8 and a live wire 9; the live wire 9 is provided with a temperature control switch 10, as shown in FIG. 3; when the temperature of the live wire 9 is too high, the temperature control switch 10 is automatically switched off, to protect a power line and avoid accidents; the ground wire 7, the null wire 8 and the live wire 9 are connected with a ground wire, a null line and a live wire in a coil respectively, as shown in FIG. 2.

Furthermore, in the wire spool according to the present invention, the temperature of a wire does not increase significantly under the conditions of instantaneous overload, the temperature control switch 10 is not triggered, and the wire spool can continue to operate.

Furthermore, in the wire spool according to the present invention, after the wire is cooled, the temperature control switch 10 is automatically switched on. A specific embodiment of the present invention is as follows: A plug 11 is inserted in a socket, a coil 6 is pulled by hand, the winding shaft 12 rotates to start to unwind a wire, the handle 2 is held by hand to move the wire spool to a place where electricity needs to be used, an electrical appliance and the like are inserted in the patch board 5 on the side of the wire spool so that the electrical appliance and the like can be used.

Under the conditions of overload, short circuit, etc., as the wire generates heat, when the temperature of the wire is too high, the temperature control switch 10 is automatically switched off, the wire spool enters a protection state; after the wire cools, the temperature control switch 10 is automatically switched on, and the wire spool can continue to be used. Under the conditions of instantaneous overload, the temperature of the wire does not increase significantly, the temperature switch 10 can detect that the wire temperature is within a normal range, and the temperature switch 10 is not automatically switched off.

What are described above are merely preferred embodiments of the present invention and do not accordingly limit the patent scope of the present invention. Equivalent structures or equivalent process transformations which are performed by utilizing the specification and accompanying drawing contents of the present invention are directly or indirectly applied to other relevant technical fields and shall be included within the patent protection scope of the present invention in a similar way.

Claims (1)

A thermally protected wire reel, comprising a support (1), wherein the support (1) is provided with a support shaft (13) connected to a winding shaft (12); a first baffle (3) and a second baffle (4) are respectively arranged at both ends of the winding shaft (12), wherein the first baffle (3) is close to the support (1), and the second baffle (4) is provided with a patch panel (5); a temperature control switch (10) is disposed in the winding shaft (12), and an earth wire (7), a zero line (8) and a live wire (9) are output the patch panel (5); the live wire (9) is connected to a live wire in a coil (6) after being connected in series with the temperature control switch (10); the null line (9) and the grounding wire (7) are connected to the coil (6); the coil (6) is wound around the winding shaft (12), and the rear end of the coil (6) is provided with a plug (11).