CN201570713U - Plug with safety replacement device - Google Patents

Abstract

The utility model discloses a take insurance replacement device's plug, it is by plug body and power cord to and the insurance replacement device that one that is equipped with in the die cavity of plug body comprises inner frame main part, inner frame upper cover and inner frame shutter, then integrative injection moulding electrical apparatus plug again. Take "U" type binding post that is equipped with in insurance replacement device's the plug power cord to be connected with interior frame main part, "U" type binding post, the protective tube of installation directly connects and "U" type binding post, and another connects "L" type live wire of installing with interior frame main part one side is participated in, and another line of power cord is participated in the riveting with the zero line in the insurance replacement device outside, the utility model discloses a plug only plays the guard action to the current load overload of this electrical apparatus facility, does not influence other electrical apparatus normal work operations of pegging graft on the socket, and after this plug because of the fuse of trouble protective tube, only need take out the insurance replacement device inner frame shutter of plug, just can be convenient change the protective tube and let electrical apparatus normal operation.

Description

A plug with a safety replacement device

technical field

The utility model belongs to the technical field of electrical appliances and relates to a structure of an electrical plug, in particular to a plug with a safety replacement device.

Background technique

The use of electrical equipment in the prior art usually uses a power socket to plug in the plug. Sometimes the power socket is not a single plug structure, but a plurality of groups that can be inserted into multiple plugs. The plug of multiple electrical appliances will cause the fuse in the socket to blow due to the large current load of one of the appliances, cutting off the circuit, which will affect other plugged electrical appliances and stop running, interrupting normal work, and the fuse of the socket must be replaced. The normal operation of all electrical appliances can be restored. The existence of the insurance method of this socket will affect the normal operation of other electrical appliances, and it will also be inconvenient to replace the socket insurance tube.

Especially according to foreign UL standard design regulations, it is required that the power safety device used in some electrical products (such as electric fans, heaters, etc.) must be placed in the plug and live wire. For this reason, some electrical plugs are provided with a fuse connected to the wire, but there is a phenomenon that the fuse is blown due to excessive current. Due to structural reasons, the fuse in some plugs cannot be replaced, and some The fuse in the plug is not easy to replace, which affects the normal use of electrical appliances.

Contents of the invention

The purpose of this utility model is to provide a compact, beautiful appearance, safe and reliable plug with a safety replacement device. On the premise of complying with foreign UL standard design safety specifications, the original way of placing the safety in the socket is changed to a The structure in which the insurance tube replacement device is arranged in the plug body solves the above-mentioned problems existing in the existing socket or plug.

The technical scheme adopted by the utility model is that a plug with a safety replacement device includes a plug body and a power cord, and a plug body protected by an inner frame body, an inner frame upper cover, and an inner frame is arranged in the cavity of the plug body. A safety replacement device composed of a door, one of the power lines is riveted to the "U"-shaped terminal on the main body of the inner frame, one end of the insurance tube is connected to the "U"-shaped terminal, and the other end is connected to the inner frame The "L"-shaped live wire pin installed on one side of the main body, and the other wire of the power cord are riveted and connected with the zero wire pin on the outside of the insurance replacement device. The insurance replacement device and the plug body are injection molded into one; The front of the plug body forms an opening for installing the safety tube, and the inner frame protection door is inserted through the opening in front of the plug body to cover it tightly.

The plug with insurance replacement device described in the utility model is also characterized in that:

The upper cover of the inner frame is also provided with a protrusion, and the end of the protective door of the inner frame is provided with a flange.

The inner frame protection door is also provided with a semi-cylindrical convex line matching the position of the inner frame main body groove.

The utility model changes the original way of placing the fuse in the socket into the way of installing a fuse replacement device in the plug body, and places a fuse in the cavity of the plug body insurance replacement device, which only plays a role in the current load overload of the electrical equipment. Protective function without affecting the normal operation of other electrical appliances plugged into the socket. When the plug is blown due to a faulty fuse, you only need to pull out the protective door of the inner frame of the plug insurance replacement device to easily replace the fuse. The appliance is functioning normally. The structure of the utility model is not only suitable for the improvement of various plug products in my country, but also conforms to the requirements of American UL product standards.

The most obvious structural feature of this utility model is that it is necessary to pull out the inner frame protection door through tools to replace the safety tube, and it is impossible to replace or touch the charged safety tube during normal use, which avoids the danger of using or children playing. There may be a risk of accidental electric shock.

Description of drawings

Fig. 1 is a schematic diagram of the plug structure of the utility model with insurance replacement device;

Fig. 2 is a schematic diagram of the front structure of the plug with insurance replacement device of the present invention;

Figure 3a is a schematic diagram of the structure of the upper cover of the plug inner frame with the insurance replacement device of the present invention;

Figure 3b is a schematic diagram of the structure of the protection door of the plug inner frame with a safety replacement device of the present invention;

Fig. 4 is a schematic diagram of the structure of the plug end with a safety replacement device of the present invention.

In the figure, 1. Plug body, 2. Power cord, 3. Main body of inner frame, 4. Upper cover of inner frame, 5. Protection door of inner frame, 6. "U" type terminal, 7. Insurance tube, 8." L" type live wire pin, 9. neutral wire pin, 10. bump, 11. flange, 12. semi-cylindrical raised line, 13. arc notch.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

A plug with a safety replacement device, as shown in Figures 1 and 2, includes a plug body 1 and a power cord 2, and a cavity consisting of an inner frame body 3 and an inner frame upper cover 4 is arranged in the cavity of the plug body 1. The insurance replacement device composed of the inner frame protection door 5, one of the power cords 2 is riveted to the "U"-shaped terminal 6 provided on the inner frame main body 3, and one end of the insurance tube 7 is connected to the "U"-shaped Terminal 6, the other end is connected to the "L" type live wire pin 8 installed on one side of the inner frame main body 3, and the other wire of the power cord 2 is riveted to the neutral pin 9 on the outside of the insurance replacement device. The replacement device and the plug body 1 are injection molded into one; the inner frame upper cover 4 forms an opening for installing the safety tube (7) on the plug body 1 front, and the inner frame protective door 5 is inserted into the opening in front of the plug body 1 to cover it tightly.

As shown in FIG. 3 a and FIG. 3 b , the inner frame upper cover 4 is further provided with a protrusion 10 , and the end of the inner frame protection door 5 is provided with a flange 11 .

As shown in FIG. 4 , the inner frame protection door 5 is also provided with a semi-cylindrical protruding line 12 matching with the groove of the inner frame main body.

The utility model is a plug with a safety replacement device, which consists of a plug body 1 and a power cord 2, and a cavity provided in the plug body 1 is protected by an inner frame main body 3, an inner frame upper cover 4 and an inner frame. The safety replacement device formed by the door 5 cooperates as a whole, and then an electrical plug is integrally injection-molded.

The neutral wire end of the plug is directly riveted to one of the wires of the power cord 2 by a neutral wire pin 9, and then the neutral wire pin 9 is fixed on the side of the insurance replacement device, and the "L"-shaped live wire pin 8 is fixed to the main body of the inner frame 3. At the upper end, the "U"-shaped terminal 6 is riveted and connected with the other line of the power cord 2, and then the "U"-shaped terminal 6 is fixed in the slot at the lower end of the inner frame main body 3, and the safety tube 7 is respectively connected to the "U" Type connecting terminal 6 and "L" type live wire pin 8 are in contact to form a conduction circuit of the live wire.

Most of the safety replacement device of the utility model is wrapped in the plug body 1. When replacing the safety tube 7, the inner frame protection door 5 must be inserted into the inner frame protection door 5 with a tool at the circular arc gap 13 and then pulled out forward. According to the requirements of use, the inner frame protection door 5 can be designed as a structure that can be fully pulled out or not fully pulled out. The utility model designs the inner frame protection door 5 as a structure that is not completely pulled out, in order to prevent it from being lost. When the inner frame protection door 5 is drawn out approximately to just fully exposing the safety tube in the insurance replacement device, the flange 11 of the inner frame protection door 5 is blocked by the projection 10 of the inner frame loam cake 4, so that the inner frame protection door 5 cannot Completely pull out, at this time, the fuse 7 can be picked out from the opening of the inner frame upper cover 4 on the front of the plug body 1, and after putting the new safety tube 7, push the inner frame protection door 5 back to the bottom, Completely cover the opening of the inner frame upper cover 4 on the front of the plug body 1, when the inner frame protection door 5 is pushed to the bottom, the semi-cylindrical convex strip 12 on the inner frame protection door 5 is just stuck in the groove position of the inner frame main body 3 to make the inner frame Frame protection door 5 can not disengage automatically, prevents from touching the charged safety tube, avoids the danger of accidental electric shock that may be caused during use or when children are playing, and plays a role of safety protection.

The plug of the utility model can be widely used for overcurrent protection of various household appliances. The insurance replacement device of the plug uses engineering plastic materials with fireproof, heat-resistant, high strength and high insulation. Therefore, when it is manufactured and used, it has reliable safety and significant economic value.

The above-mentioned embodiment is only an example of the utility model, and is not used to limit the implementation of the utility model and the scope of rights. All equivalent changes and modifications made according to the content of the patent protection scope of the utility model application shall be included in this utility model. Within the scope of utility model patent application.

Claims (3)

1. A plug with a safety replacement device, comprising a plug body (1) and a power cord (2), is characterized in that, in the cavity of the plug body (1), an inner frame body (3), The safety replacement device composed of the inner frame upper cover (4) and the inner frame protective door (5), one of the power cords (2) is riveted with the U-shaped terminal (6) provided on the inner frame main body (3) One end of the insurance tube (7) is connected to the "U" type terminal (6), the other end is connected to the "L" type fire wire pin (8) installed on the side of the inner frame body (3), and the power cord (2) The other line of the insurance replacement device is riveted and connected to the zero line pin (9) on the outside of the insurance replacement device. The insurance replacement device is injection molded into one body with the plug body (1); Front side forms the opening that safety tube (7) is installed, and inner frame protection door (5) is inserted by the opening in front of plug main body (1) and it is covered tightly. 2. The plug with safety replacement device according to claim 1, characterized in that, the upper cover (4) of the inner frame is also provided with a bump (10), and the end of the protective door (5) of the inner frame is The head is provided with a flange (11). 3. The plug with a safety replacement device according to claim 1, characterized in that, the inner frame protection door (5) is also provided with a semi-cylindrical protruding line (12) matching the position of the inner frame main body groove.

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