An overload protection plug power cord

Abstract

The utility model relates to a kind of overload-preventing plug power cord.The upper end of overload-preventing connecting seat is inserted with plug, the front end of plug is installed with connector, the middle part of connector is installed with connecting wire, the front end of overload-preventing connecting seat is installed with limiting structure for limiting connecting wire, and limiting structure includes first spring and second spring for limiting connecting wire.The utility model is provided with sealing gasket, which not only has waterproof effect but also limits plug.The utility model is provided with limiting structure, so that plug will not be pulled out of socket when connecting wire is pulled upward, thereby achieving the purpose of stabilizing plug, increasing the stability of plug, and plug can only be pulled out of socket by pulling plug upward, so the utility model has simple structure, easy plug removal operation, and can better stabilize plug.

Description

Technical Field

[0001] This utility model relates to the field of plug power cord technology, and in particular to an overload-proof plug power cord. Background Technology

[0002] A plug power cord is a type of wire used to transmit current. It is commonly used to connect electrical appliances and power sockets. Existing plug power cords have overload protection to prevent the power cord from overheating due to prolonged overload operation of the plug.

[0003] For example, Chinese patent application CN202421222781.4 discloses an overload-proof plug power cord, the specific content of which is: the limiting component includes a fixing block, which provides support and is fixedly connected to the right side of the connector. A positioning plate is fixedly connected to the top of the fixing block, which provides support. The left side of the positioning plate is elastically connected to the limiting block through a spring. The top left side of the limiting block is set as an inclined surface. By pressing the inclined surface of the limiting block, the limiting block moves and presses the spring. The reverse force of the spring being pressed can reset the limiting block, thereby driving the slot to move and causing the locking block to lock into the slot to limit the plug, thereby preventing the plug from falling off and improving the stability of the plug connection. However, it has the following technical problems: When the above structure releases the plug from its limit, the two limit blocks need to be pushed away from the plug in order to remove the plug, which shows that the plug removal operation is rather inconvenient. Utility Model Content

[0004] To address the inconvenience of unplugging the plug in the prior art as mentioned in the background section, this utility model provides the following technical solution: An overload-proof plug power cord, including an overload-proof connector; The overload protection connector has a plug inserted into its upper end, a connector head installed at the front end of the plug, and a connecting wire installed in the middle of the connector head.

[0005] The front end of the overload protection connector is equipped with a limiting structure for limiting the connection line. The limiting structure includes a first spring and a second spring for limiting the connection line.

[0006] Furthermore, the limiting structure includes a U-shaped block, with a first spring and a second spring respectively installed on the inner walls of both sides of the U-shaped block, and the upper horizontal height of the second spring is higher than the upper horizontal height of the first spring.

[0007] Furthermore, the first spring includes a high end and a low end, the low end is located at the rear end of the first spring, and the horizontal height of the low end is lower than that of the high end. The horizontal height of the low end is lower than that of the bottom end of the second spring. The high end is provided with multiple positioning holes.

[0008] Furthermore, a connecting block is installed at the front end of the second spring piece, and multiple locking blocks that engage with the positioning holes are installed at the upper end of the connecting block.

[0009] Furthermore, the lower end of the plug is equipped with multiple copper pins.

[0010] Furthermore, the overload protection connector has a socket for inserting copper feet in the middle, a fixing ring is installed in the middle, and the front end of the fixing ring has an installation port for limiting the U-shaped block.

[0011] Furthermore, the lower end of the fixing ring is provided with multiple water leakage grooves, and the multiple water leakage grooves are circumferentially distributed on the bottom of the fixing ring. A sealing gasket is placed in the middle of the fixing ring, and an insertion port is provided in the middle of the sealing gasket. An inclined edge for guiding water is machined on the outer side of the sealing gasket.

[0012] Furthermore, the drainage channel is an inclined channel, with one side of the drainage channel facing the inclined side being higher than the other side of the drainage channel, and the outer side of the inclined side connecting to the middle of the drainage channel.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This invention, through the setting of the sealing gasket, not only achieves a waterproof effect, but also limits the plug. Furthermore, the limiting structure of this invention prevents the plug from being pulled out of the socket when the connecting wire is pulled upwards, thereby achieving the purpose of securing the plug and increasing its stability. Moreover, the plug can only be pulled out of the socket by pulling it upwards. It can be seen that this invention has a simple structure, makes the plug removal operation convenient, and can effectively secure the plug. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the plug of this utility model; Figure 3 This is a schematic diagram showing the connection between the overload protection connector and the limiting structure of this utility model; Figure 4 This is a schematic diagram of the structure of the water leakage channel of this utility model; Figure 5 This is a schematic diagram of the limiting structure of this utility model; Figure 6 This is a schematic diagram of the structure of the first spring of this utility model; Figure 7 This is a schematic diagram of the structure of the second spring of this utility model.

[0015] The following is a list of component names represented by the various reference numerals in the attached figures: 10-Plug, 11-Copper pin, 12-Connector, 13-Connecting wire, 20-Overload protection connector, 21-Socket, 22-Retaining ring, 23-Installation port, 24-Drain groove, 25-Sealing gasket, 26-Socket, 27-Bevel, 30-Limiting structure, 31-U-shaped block, 32-First spring, 321-High end, 322-Low end, 323-Positioning hole, 33-Second spring, 331-Connecting block, 332-Clamping block. Detailed Implementation

[0016] The preferred embodiments of this utility model are described in detail below, and a clear and complete explanation is given in conjunction with the accompanying drawings.

[0017] Please see Figures 1-7 This utility model provides an overload-proof plug power cord, including an overload-proof connector 20. A plug 10 is inserted into the upper end of the overload-proof connector 20. Multiple copper pins 11 are fixedly installed at the lower end of the plug 10. A connector 12 is fixedly installed at the front end of the plug 10. A connecting wire 13 is fixedly installed in the middle of the connector 12. The connecting wire 13 is connected to an external device.

[0018] The overload protection connector 20 has a socket 21 in the middle for inserting copper feet 11. A fixing ring 22 is fixedly installed in the middle of the overload protection connector 20. Multiple drainage grooves 24 are provided at the lower end of the fixing ring 22. The multiple drainage grooves 24 are circumferentially distributed at the bottom of the fixing ring 22. The drainage grooves 24 are inclined grooves. The side of the drainage groove 24 facing the inclined side 27 is higher than the other side of the drainage groove 24, so that water can flow to the outside of the fixing ring 22. The outside of the inclined side 27 is connected to the middle of the drainage groove 24, so that if water is accidentally spilled in the middle of the fixing ring 22, the water can flow to the outside of the fixing ring 22 through the inclined side 27 and the multiple drainage grooves 24.

[0019] A sealing gasket 25 is placed in the middle of the fixing ring 22. The sealing gasket 25 is an insulating rubber gasket. The outer surface of the sealing gasket 25 is coated with a hydrophobic coating, which makes it difficult for water stains on the sealing gasket 25 to adhere to the sealing gasket 25. Water stains in the 235 can slide down towards the drain groove 24. A socket 26 is opened in the middle of the sealing gasket 25, and the lower end of the plug 10 can be inserted into the socket 26, so that the outer wall of the plug 10 and the inner wall of the socket 26 are in close contact. The plug 10 is fastened by the friction between the socket 26 and the outer wall of the plug 10, so that the plug 10 is not easy to slide out of the socket 26.

[0020] The outer side of the sealing gasket 25 is machined with a bevel 27 for guiding water. The bevel 27 makes the outer side of the sealing gasket 25 have a certain slope, which can accelerate the flow of water from the middle of the fixing ring 22 and reduce the accumulation of water droplets, thereby achieving a waterproof effect and preventing water from entering the socket 21 and causing a short circuit.

[0021] The overload protection connector 20 has a limiting structure 30 installed at its front end to limit the connection wire 13. The limiting structure 30 includes a U-shaped block 31. The front end of the fixing ring 22 has an installation port 23 for limiting the U-shaped block 31, and the U-shaped block 31 is welded into the installation port 23. This allows the limiting structure 30 to be securely fixed to the front end of the fixing ring 22.

[0022] The limiting structure 30 includes a first spring 32 and a second spring 33 for limiting the connecting wire 13. The first spring 32 and the second spring 33 are respectively installed on the inner walls of the two sides of the U-shaped block 31. The second spring 33 is fixedly installed on the left side of the U-shaped block 31, and the first spring 32 is fixedly installed on the right side of the U-shaped block 31. The upper end of the second spring 33 is higher than the upper end of the first spring 32. When the plug 10 is inserted into the socket 26, the connecting wire 13 first presses down on the second spring 33, causing the second spring 33 to move away from the first spring 32. The locking block 332 moves away from the positioning hole 323 at the same time, so that the connecting wire 13 can move to the lower end of the first spring 32 and the second spring 33. When the connecting wire 13 moves to the lower end of the first spring 32 and the second spring 33, the first spring 32 and the second spring 33 are reset, and the locking block 332 continues to be locked into the positioning hole 323 to limit the connecting wire 13.

[0023] The first spring 32 includes a high end 321 and a low end 322. The low end 322 is located at the rear end of the first spring 32, and the horizontal height of the low end 322 is lower than that of the high end 321. The horizontal height of the low end 322 is also lower than that of the bottom end of the second spring 33. This causes the connecting wire 13 to first come into contact with the low end 322 when the plug 10 is pulled out of the socket 26, thereby causing the first spring 32 to move upward, raising the horizontal height of the positioning hole 323. The locking block 332 then moves out of the positioning hole 323, allowing the plug 10 to be removed.

[0024] Multiple positioning holes 323 are provided at the high end 321. A connecting block 331 is fixedly installed on the front end of the second spring piece 33 near the side of the first spring piece 32. Multiple locking blocks 332 that engage with the positioning holes 323 are fixedly installed on the upper end of the connecting block 331. When the connecting wire 13 is inside the U-shaped block 31 and the connecting wire 13 is limited by the first spring piece 32 and the second spring piece 33, the locking blocks 332 are engaged in the positioning holes 323. When the connecting wire 13 is accidentally pulled upward, the connecting wire 13 and the bottom of the connecting block 331 touch, causing the front end of the connecting block 331 and the first spring piece 32 to move upward. Because the locking blocks 332 are engaged in the positioning holes 323, the connecting wire 13 and the first spring piece 32 are engaged in the positioning holes 323. The positioning hole 323 prevents the front end of the first spring 32 from moving away from the front end of the second spring 33. The front ends of the first spring 32 and the second spring 33 do not move away from each other, thus securing the plug 10. This prevents the plug 10 from becoming loose or being pulled out of the socket 26 due to the upward pulling of the connecting wire 13. When the copper pin 11 is pulled out of the socket 21, the plug 10 can only be removed from one end. This pushes the lower end 322 upward against the end of the connecting wire 13 near the connector 12, causing the positioning hole 323 to move away from the locking block 332, thus allowing the plug 10 to be pulled out. The removal operation is relatively simple.

[0025] Based on the above description and accompanying drawings, those skilled in the art can understand and implement this utility model. Furthermore, any non-creative modifications made to this utility model by those skilled in the art without inventive effort are still within the protection scope of this utility model.

Claims

1. An overload-proof plug power cord, comprising an overload-proof connector (20), characterized in that: The upper end of the overload protection connector (20) is provided with a plug (10), the front end of the plug (10) is provided with a connector (12), and the middle part of the connector (12) is provided with a connecting wire (13). The front end of the overload protection connector (20) is equipped with a limiting structure (30) for limiting the connection line (13). The limiting structure (30) includes a first spring (32) and a second spring (33) for limiting the connection line (13).

2. The overload protection plug power cord according to claim 1, characterized in that: The limiting structure (30) includes a U-shaped block (31), a first spring piece (32) and a second spring piece (33) respectively installed on the inner walls of both sides of the U-shaped block (31), and the upper horizontal height of the second spring piece (33) is higher than the upper horizontal height of the first spring piece (32).

3. The overload protection plug power cord according to claim 1, characterized in that: The first spring piece (32) includes a high end (321) and a low end (322). The low end (322) is located at the rear end of the first spring piece (32), and the horizontal height of the low end (322) is lower than that of the high end (321). The horizontal height of the low end (322) is lower than that of the bottom end of the second spring piece (33). Multiple positioning holes (323) are provided at the high end (321).

4. The overload protection plug power cord according to claim 3, characterized in that: The front end of the second spring (33) is equipped with a connecting block (331), and the upper end of the connecting block (331) is equipped with a plurality of locking blocks (332) that engage with the positioning hole (323).

5. The overload protection plug power cord according to claim 2, characterized in that: The lower end of the plug (10) is fitted with a plurality of copper pins (11).

6. The overload protection plug power cord according to claim 5, characterized in that: The overload protection connector (20) has a socket (21) for inserting copper feet (11) in the middle. A fixing ring (22) is installed in the middle of the overload protection connector (20). The front end of the fixing ring (22) has an installation port (23) for limiting the U-shaped block (31).

7. The overload protection plug power cord according to claim 6, characterized in that: The lower end of the fixing ring (22) is provided with multiple water leakage grooves (24), and the multiple water leakage grooves (24) are circumferentially distributed on the bottom of the fixing ring (22). A sealing gasket (25) is placed in the middle of the fixing ring (22), and an insertion port (26) is provided in the middle of the sealing gasket (25). An inclined edge (27) for guiding water is machined on the outer side of the sealing gasket (25).

8. The overload protection plug power cord according to claim 7, characterized in that: The drain groove (24) is an inclined groove. The side of the drain groove (24) facing the inclined side (27) is higher than the other side of the drain groove (24), and the outer side of the inclined side (27) is connected to the middle of the drain groove (24).

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