Plug with overheating protection

Abstract

The utility model discloses a plug with overheating protection, which comprises a plug main body, a conducting strip is fixedly arranged in the plug main body, and one side of the conducting strip is fixedly connected with two plug electrodes. According to the plug, when a plug electrode is inserted into a socket, one end of a conducting rod is extruded and contracts into a second through groove, so that the conducting rod is in contact with a conducting strip, normal power-on work of the plug is ensured, a telescopic spring is in a compressed state and is limited through two thermosensitive metal sheets, and the safety of the plug is ensured. And the two thermosensitive metal sheets deform and then shrink into the mounting grooves when the temperature in the plug main body exceeds a certain value, so that the telescopic springs are not limited any more, the conductive rods move along with the telescopic springs and are not in contact with the conductive sheets any more, and thus the plug is powered off, and the service life of the plug is prolonged. And fire caused by over-high temperature in the plug main body is avoided.

Description

Technical Field

[0001] This utility model relates to the field of plugs, specifically a plug with overheat protection. Background Technology

[0002] The connectors of general electronic products and the pins of electrical appliances are called plugs. Household AC power plugs and sockets consist of a male connector that is protruding in the shape of a rod or copper plate, which is physically inserted into a female connector with a slot or recess in the socket. There are many types of plugs, but existing plugs are not convenient for automatically cutting off power when the internal temperature of the plug becomes too high, which can lead to the plug overheating and potentially cause a fire.

[0003] To address the aforementioned issues, a plug with overheat protection is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a plug with overheat protection to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a plug with overheat protection, comprising a plug body, a conductive sheet fixedly disposed inside the plug body, two plug electrodes fixedly connected to one side of the conductive sheet, the ends of the two plug electrodes away from the conductive sheet extending to the outside, a placement groove formed on one side of the top of the plug body, an installation groove formed inside the placement groove, an annular seat fixedly disposed inside the installation groove, two thermistor metal sheets fixedly connected to one side of the annular seat, a first through groove formed inside the installation groove, a second through groove formed inside the first through groove, a conductive rod inserted between the second through groove and the first through groove, a telescopic spring sleeved on the middle of the surface of the conductive rod, and the two thermistor metal sheets corresponding to the telescopic spring.

[0006] When the plug electrodes are inserted into the socket, one end of the conductive rod is compressed and retracts into the second through slot, allowing the conductive rod to contact the conductive plate, thus ensuring the normal power supply of the plug. The telescopic spring is in a compressed state and is limited by two thermistor metal plates. When the temperature inside the plug body exceeds a certain level, the two thermistor metal plates deform and retract into the mounting groove, thus no longer limiting the telescopic spring. This allows the conductive rod to move with the telescopic spring and no longer contact the conductive plate, thereby cutting off the power to the plug and preventing the temperature inside the plug body from becoming too high and potentially causing a fire.

[0007] Preferably, one end of the conductive rod extends into the interior of the mounting groove and is engaged with an insulating pressing component. A fixing groove is provided at the connection between the insulating pressing component and the conductive rod. The fixing groove facilitates the initial connection between the insulating pressing component and the conductive rod.

[0008] Preferably, a connecting slot is provided on the inner side of the fixing slot, and a connecting block is engaged inside the connecting slot. The connecting block is fixedly connected to the conductive rod, and the limiting engagement between the connecting slot and the connecting block facilitates further connection between the conductive rod and the insulating pressing component.

[0009] Preferably, a fixing groove is provided in the middle of the top of the plug body, and a temperature display is fixedly installed inside the fixing groove. The temperature display facilitates real-time monitoring and display of the surface temperature of the plug.

[0010] Preferably, a connector sleeve is fixedly connected to one side of the plug body, and the surface of the connector sleeve is provided with several reinforcing grooves. The strength of the connection between the plug body and the cable can be improved by the cooperation of the connector sleeve and the several reinforcing grooves.

[0011] Preferably, several reinforcing strips are fixedly provided on both sides of the plug body near the wiring sleeve. The structural strength of the plug body can be improved by the arrangement of several reinforcing strips.

[0012] Preferably, the end of the conductive rod away from the insulating pressing member extends to the outside, and a through hole is provided in the middle of the conductive sheet. The through hole is correspondingly provided to the conductive rod, and the through hole facilitates the extension and retraction of the conductive rod.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: When the plug electrodes are inserted into the socket, one end of the conductive rod is squeezed and retracts into the second through groove, so that the conductive rod contacts the conductive plate, thereby ensuring the normal power supply of the plug. The telescopic spring is in a compressed state and is limited by two thermistor metal plates. When the temperature inside the plug body exceeds a certain level, the two thermistor metal plates will deform and retract into the mounting groove, thus no longer limiting the telescopic spring. The conductive rod moves with the telescopic spring and no longer contacts the conductive plate, thereby cutting off the power to the plug and preventing the temperature inside the plug body from becoming too high and easily causing a fire. Attached Figure Description

[0014] Figure 1 This is the first perspective view of the present invention;

[0015] Figure 2 This is a second perspective view of the present invention;

[0016] Figure 3 This is a third perspective view of the present invention;

[0017] Figure 4 This is a front sectional view of the present invention;

[0018] Figure 5This is an enlarged view of part A of this utility model.

[0019] In the diagram: 1. Plug body; 2. Wiring sleeve; 3. Reinforcing groove; 4. Reinforcing strip; 5. Fixing groove; 6. Temperature display; 7. Plug electrode; 8. Conductive rod; 9. Conductive sheet; 10. Installation groove; 11. First through groove; 12. Telescopic spring; 13. Second through groove; 14. Mounting groove; 15. Ring seat; 16. Thermistor metal sheet; 17. Insulating pressing part; 18. Fixing slot; 19. Connecting slot; 20. Connecting block; 21. Through hole. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] Please see Figure 1-5 This utility model provides a plug with overheat protection, including a plug body 1. A conductive sheet 9 is fixedly disposed inside the plug body 1. Two plug electrodes 7 are fixedly connected to one side of the conductive sheet 9. The ends of the two plug electrodes 7 away from the conductive sheet 9 extend to the outside. A mounting groove 10 is formed on one side of the top of the plug body 1. An installation groove 14 is formed inside the mounting groove 10. An annular seat 15 is fixedly disposed inside the installation groove 14. Two thermistorous metal sheets 16 are fixedly connected to one side of the annular seat 15. A first through groove 11 is formed inside the installation groove 14. A second through groove 13 is formed inside the first through groove 11. A conductive rod 8 is inserted between the second through groove 13 and the first through groove 11. A telescopic spring 12 is sleeved on the middle part of the surface of the conductive rod 8. Two thermistor metal plates 16 are respectively set with corresponding telescopic springs 12. When the plug electrode 7 is inserted into the socket, one end of the conductive rod 8 will be squeezed and retracted into the second through groove 13, so that the conductive rod 8 contacts the conductive plate 9, thereby ensuring the normal power supply of the plug. The telescopic spring 12 is in a compressed state and is limited by the two thermistor metal plates 16. When the temperature inside the plug body 1 exceeds a certain level, the two thermistor metal plates 16 will deform and retract into the mounting groove 14, and then no longer limit the telescopic spring 12. This allows the conductive rod 8 to move with the telescopic spring 12 and no longer contact the conductive plate 9, thereby cutting off the power to the plug and preventing the temperature inside the plug body 1 from becoming too high and easily causing a fire.

[0022] One end of the conductive rod 8 extends into the interior of the mounting groove 10 and is engaged with an insulating pressing member 17. A fixing groove 18 is provided at the connection between the insulating pressing member 17 and the conductive rod 8. A connecting groove 19 is provided on the inner side of the fixing groove 18. A connecting block 20 is engaged inside the connecting groove 19. The connecting block 20 is fixedly connected to the conductive rod 8. A fixing groove 5 is provided in the middle of the top of the plug body 1. A temperature display 6 is fixedly installed inside the fixing groove 5.

[0023] In use, the fixed slot 18 facilitates the initial connection between the insulating pressing part 17 and the conductive rod 8. The connection slot 19 and the limiting engagement of the connection block 20 facilitate the further connection between the conductive rod 8 and the insulating pressing part 17. The temperature display 6 facilitates the real-time monitoring and display of the surface temperature of the plug.

[0024] A connector sleeve 2 is fixedly connected to one side of the plug body 1. Several reinforcing grooves 3 are provided on the surface of the connector sleeve 2. Several reinforcing strips 4 are fixedly provided on both sides of the plug body 1 near the connector sleeve 2. The end of the conductive rod 8 away from the insulating pressing part 17 extends to the outside. A through hole 21 is provided in the middle of the conductive sheet 9. The through hole 21 is provided in correspondence with the conductive rod 8.

[0025] In use, the combination of the connector sleeve 2 and several reinforcing grooves 3 can improve the strength of the connection between the plug body 1 and the cable, the combination of several reinforcing strips 4 can improve the structural strength of the plug body 1, and the combination of through holes 21 can facilitate the extension and retraction of the conductive rod 8.

[0026] In this embodiment, when the plug electrode 7 is inserted into the socket, one end of the conductive rod 8 is compressed and retracts into the second through groove 13, so that the conductive rod 8 contacts the conductive piece 9, thereby ensuring the normal power supply of the plug. The telescopic spring 12 is in a compressed state and is limited by two thermistor metal pieces 16. When the temperature inside the plug body 1 exceeds a certain level, the two thermistor metal pieces 16 will deform and retract into the mounting groove 14, thus no longer limiting the telescopic spring 12. The conductive rod 8 moves with the telescopic spring 12 and no longer contacts the conductive piece 9, thereby cutting off the power to the plug and preventing the temperature inside the plug body 1 from becoming too high and easily causing a fire. The temperature display 6 facilitates real-time monitoring and display of the surface temperature of the plug.

[0027] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A plug with overheat protection, comprising a plug body (1), characterized in that: A conductive sheet (9) is fixedly installed inside the plug body (1). Two plug electrodes (7) are fixedly connected to one side of the conductive sheet (9). The ends of the two plug electrodes (7) away from the conductive sheet (9) extend to the outside. A mounting groove (10) is opened on one side of the top of the plug body (1). An installation groove (14) is opened inside the mounting groove (10). An annular seat (15) is fixedly installed inside the installation groove (14). Two thermistor metal sheets (16) are fixedly connected to one side of the annular seat (15). A first through groove (11) is opened inside the installation groove (14). A second through groove (13) is opened inside the first through groove (11). A conductive rod (8) is inserted between the second through groove (13) and the first through groove (11). A telescopic spring (12) is sleeved on the middle part of the surface of the conductive rod (8). The two thermistor metal sheets (16) are respectively arranged corresponding to the telescopic spring (12).

2. A plug with overheat protection according to claim 1, characterized in that: One end of the conductive rod (8) extends into the interior of the mounting groove (10) and is engaged with an insulating pressing member (17). A fixing groove (18) is provided at the connection between the insulating pressing member (17) and the conductive rod (8).

3. A plug with overheat protection according to claim 2, characterized in that: The inner side of the fixed slot (18) is provided with a connecting slot (19), and a connecting block (20) is engaged inside the connecting slot (19). The connecting block (20) is fixedly connected to the conductive rod (8).

4. A plug with overheat protection according to claim 1, characterized in that: A fixing groove (5) is provided in the middle of the top of the plug body (1), and a temperature display (6) is fixedly installed inside the fixing groove (5).

5. A plug with overheat protection according to claim 1, characterized in that: A connector sleeve (2) is fixedly connected to one side of the plug body (1), and a number of reinforcing grooves (3) are provided on the surface of the connector sleeve (2).

6. A plug with overheat protection according to claim 1, characterized in that: Several reinforcing strips (4) are fixedly installed on both sides of the plug body (1) near the wiring sleeve (2).

7. A plug with overheat protection according to claim 1, characterized in that: The conductive rod (8) extends to the outside at one end away from the insulating pressing member (17), and a through hole (21) is provided in the middle of the conductive sheet (9), and the through hole (21) is provided corresponding to the conductive rod (8).

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