Fusing type temperature control plug

Abstract

The utility model discloses a fusing type temperature control plug, which comprises a plug pin and a power line connected in series with the plug pin, the plug pin is arranged at the bottom of a bottom shell, the bottom shell is provided with a through hole for the plug pin to pass through, a heat conduction piece is arranged in the bottom shell, and a temperature sensor is arranged between the heat conduction piece and the bottom of the bottom shell. The temperature of the live wire bolt is transmitted to the temperature sensor through the heat-conducting piece; the heat conduction piece is provided with a fuse clamping groove, an opening of the fuse clamping groove faces the top of the bottom shell, a fuse connected with a live wire in series is arranged in the fuse clamping groove, the temperature of the fuse is transmitted to the temperature sensor through the heat conduction piece, a pressure cover is arranged above the heat conduction piece, and the pressure cover is connected into the bottom shell through a pressure cover buckle. The temperature sensor and the fuse are designed in the plug, when the temperature exceeds a threshold value, a power supply can be cut off according to a signal of the temperature sensor, and when the current exceeds the standard, the fuse can be automatically fused to protect a circuit; the temperature of the plug pin and the temperature of the fuse are transmitted to the temperature sensor through the heat conduction piece, so that the temperature sensor can effectively sense the abnormity of the temperature of the plug, the influence of instant high temperature is reduced, and timely and effective temperature protection is provided.

Description

Technical Field

[0001] This utility model relates to a fusible temperature control plug, belonging to the field of plug technology. Background Technology

[0002] Power cord plugs are widely used in daily life. Various industries, large and small, may require them; basically, wherever electricity is used, power cord plugs are used. This demonstrates that power cord plugs are ubiquitous in our lives, and people cannot live without them. Currently, the demand for various electrical appliances is increasing daily, especially for new energy vehicles that require charging. Charging generates a lot of heat, posing a significant safety hazard. Power cord plugs typically have internal temperature switches to monitor the plug temperature in real time. The accuracy of the feedback signal from these temperature switches is crucial.

[0003] For example, Chinese Patent CN 205509163 U discloses a temperature-protected plug and a temperature-protected electrical appliance. It includes a temperature switch inside the plug, located in a space between the U-shaped plate and the side plate, designed to prevent fires and other damage caused by overheating. However, the temperature switch's placement in a separate space, without direct contact with the plug, results in insufficient temperature sensitivity and an inability to detect overheating in a timely manner. If the temperature switch were in direct contact with the plug, the plug's temperature fluctuations would be significant, potentially causing a momentary high temperature that could disconnect the circuit. However, such a momentary high temperature does not necessarily lead to an immediate safety hazard; only sustained high temperatures would trigger spontaneous combustion. Furthermore, the plug's reliance solely on a temperature switch provides limited functionality and is insufficient for effective overload protection. Utility Model Content

[0004] The purpose of this invention is to provide a fuse-type temperature control plug. Its principle is based on a temperature sensor and a fuse designed inside the plug. When the temperature exceeds a threshold, the power supply is disconnected based on the temperature sensor signal. When the current exceeds the limit, the fuse automatically melts to protect the circuit. Furthermore, a heat-conducting component transmits the temperature of the pin and fuse to the temperature sensor, enabling the sensor to effectively detect abnormal plug temperatures, reduce the impact of instantaneous high temperatures, and provide timely temperature and overload protection.

[0005] To achieve the above-mentioned technical objectives, the technical solution of this utility model is as follows:

[0006] A fusible temperature control plug includes a plug and a power cord connected in series with the plug. The plug is located at the bottom of a base housing, which has a through hole for the plug to pass through. A heat-conducting element and a temperature sensor are located inside the base housing. The temperature of the live wire plug is transferred to the temperature sensor through the heat-conducting element. The heat-conducting element has a fuse slot, in which a fuse connected in series with the live wire is located. The temperature of the fuse is transferred to the temperature sensor through the heat-conducting element. A pressure cover is located inside the base housing and is connected to the base housing by a pressure cover snap-fit.

[0007] The temperature sensor is positioned between the heat-conducting component and the bottom of the base.

[0008] The fuse slot opening faces the top of the bottom shell.

[0009] To protect the components inside the bottom shell, the bottom shell is equipped with a protective cover.

[0010] To increase the contact area between the pin and the heat-conducting component, the heat-conducting component is provided with a pin slot, and the live wire pin is located in the pin slot.

[0011] The pressure cover buckle includes a pressure cover hook and a pressure cover groove. The pressure cover hook is disposed on the pressure cover, and the pressure cover groove is disposed on the bottom shell.

[0012] The pressure cover slot has multiple layers, and the multiple pressure cover slots are arranged sequentially on the side wall of the bottom shell along the height direction of the bottom shell.

[0013] The bottom shell is provided with a copper ring limiting groove, and a copper ring is provided in the copper ring limiting groove. The copper ring is fitted onto the power cord. The copper ring includes a limiting part and an anti-detachment part. The anti-detachment part is larger than the limiting part. The limiting part is located in the copper ring limiting groove, and the anti-detachment part is located in the bottom shell.

[0014] This utility model plug incorporates a temperature sensor and a fuse. When the temperature exceeds a threshold, it disconnects the power supply based on the temperature sensor signal. When the current exceeds the limit, the fuse automatically melts to protect the circuit. This utility model uses a heat-conducting component to transfer the temperature of the pins and fuse to the temperature sensor, enabling the temperature sensor to effectively detect abnormal plug temperatures, reducing the impact of instantaneous high temperatures and providing timely and effective temperature protection.

[0015] This invention places the fuse in a fuse holder, which not only limits the fuse's position and transfers its temperature to the temperature switch, but also facilitates fuse replacement. The invention also features a removable pressure cap, which not only secures the internal components of the base housing but also facilitates plug maintenance. Attached Figure Description

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1 This is a schematic diagram of the exploded plug structure.

[0018] Figure 2 This is a diagram showing the power cord connection.

[0019] Figure 3 This is a schematic diagram of the internal components of the plug.

[0020] Figure 4 This is a schematic diagram of the finished plug structure. Detailed Implementation

[0021] like Figures 1-4 As shown, the fuse-type temperature control plug includes a plug and a power cord 53 connected in series with the plug. The plug includes a live wire plug 11, a neutral wire plug, and a ground wire plug. The live wire plug 11, neutral wire plug, and ground wire plug are located at the bottom of the base shell 21. The base shell 21 has holes for the live wire plug, neutral wire plug, and ground wire plug. The live wire plug 11 extends out of the bottom end of the base shell 21 through the live wire plug hole, the neutral wire plug extends out of the bottom end of the base shell 21 through the neutral wire plug hole, and the ground wire plug extends out of the bottom end of the base shell 21 through the ground wire plug hole. The live wire plug 11, neutral wire plug, and ground wire plug are all mounted on the inner frame 12 of the plug and are integrally formed with the inner frame. Of course, the plug can also be directly fixed to the base shell 21, or other common plug fixing methods can be used.

[0022] The inner frame 12 is connected to the bottom shell 21 via multiple inner frame clips. Specifically, the inner frame clips include inner frame hooks 23, which are disposed on the bottom shell 21. The inner frame 12 has inner frame locking holes 121, and the inner frame hooks 23 engage with the inner frame locking holes 121. Of course, the inner frame hooks 23 can also directly engage with the edge of the inner frame 12. Alternatively, the inner frame clips can use other common connection methods, such as connecting the inner frame 12 to the bottom shell with screws.

[0023] The live wire plug 11 has a live wire crimping part 13, the neutral wire plug has a neutral wire crimping part, and the ground wire plug has a ground wire crimping part. The live wire crimping part 13, the neutral wire crimping part, and the ground wire crimping part are all located above the inner frame 12 of the plug. The neutral wire of the power cord 53 is crimped with the neutral wire crimping part, so that the neutral wire is connected to the neutral wire pin. The ground wire of the power cord 53 is crimped with the ground wire pin crimping part, so that the ground wire is connected to the ground wire pin. The live wire of the power cord 53 is crimped with the live wire crimping part 13, so that the live wire is connected to the live wire pin. A fuse 34 is connected in series on the live wire.

[0024] A heat-conducting component is provided above the inner frame 12 of the plug. The heat-conducting component is made of ceramic (or other heat-conducting material) and consists of a plug heat-conducting plate 32 and a fuse slot 33. The fuse slot 33 is located on one side of the plug heat-conducting plate 32, facing the top of the bottom shell 21. The fuse 34 is disposed in the fuse slot 33. The plug heat-conducting plate 32 has a plug slot 131. The live wire crimping part 13 is located in the plug slot 131 and is in close contact with the plug slot 131. Alternatively, the live wire plug can be disposed in the plug slot 131, and the live wire plug can be in direct close contact with the plug slot 131. A temperature sensor 31 is provided between the plug heat-conducting plate 32 and the inner frame 12 of the plug. The temperature sensor is a temperature switch (or a similar temperature sensor). The temperature of the live wire crimping part 13 and the temperature of the fuse 34 are transferred to the temperature sensor 31 through the heat-conducting component. The first signal line of the temperature switch is connected to the first signal core of the power supply line 53, and the second signal line of the temperature switch is connected to the second signal core of the power supply line 53, so as to transmit the signal of the temperature switch.

[0025] A pressure cover 41 is provided above the heat-conducting plate 32. The pressure cover 41 is connected to the bottom shell 21 by multiple pressure cover clips. Specifically, the pressure cover clips include pressure cover hooks 42 and pressure cover grooves 24. The pressure cover hooks 42 are provided on the pressure cover 41, and the pressure cover grooves 24 are provided on the bottom shell 21. The pressure cover hooks 42 are engaged within the pressure cover grooves 24. The pressure cover grooves 24 have multiple layers (two layers are shown in the figure), and the two layers of pressure cover grooves 24 are arranged sequentially along the height direction of the bottom shell 21 on the side wall of the bottom shell 21. Of course, other common clip forms can also be used for the pressure cover clips.

[0026] Of course, the temperature sensor 31 can also be placed between the heat-conducting plate 32 and the pressure cover 41, or in other layouts that can make close contact with the heat-conducting component.

[0027] The bottom shell 21 is provided with a copper ring limiting groove at the tail end, and a copper ring 52 is provided in the copper ring limiting groove. The copper ring 52 is fitted on the power cord 53. The copper ring 52 includes a limiting part 522 and an anti-detachment part 521. The anti-detachment part 521 is larger than the limiting part 522. The anti-detachment part 521 is located inside the bottom shell 21, and the limiting part 522 is located inside the copper ring limiting groove.

[0028] In order to protect the various components inside the bottom shell 21, the bottom shell is provided with a protective cover 51.

[0029] The above embodiments do not limit the present invention in any way. All technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A fuse-type temperature control plug, comprising a pin and a power cord connected in series with the pin, wherein the pin is disposed at the bottom of a base housing, and the base housing has a through hole for the pin to pass through, characterized in that: The bottom shell contains a heat-conducting component and a temperature sensor. The temperature of the live wire pin is transferred to the temperature sensor through the heat-conducting component. The heat-conducting component has a fuse slot. The fuse connected in series with the live wire is placed in the fuse slot. The temperature of the fuse is transferred to the temperature sensor through the heat-conducting component. The bottom shell contains a pressure cover, which is connected to the bottom shell by a pressure cover buckle.

2. The fuse-type temperature control plug according to claim 1, characterized in that: The temperature sensor is positioned between the heat-conducting component and the bottom of the base.

3. The fuse-type temperature control plug according to claim 1, characterized in that: The fuse slot opening faces the top of the bottom shell.

4. The fuse-type temperature control plug according to claim 1, characterized in that: The heat-conducting component is provided with a pin slot, and the live wire pin is located in the pin slot.

5. The fuse-type temperature control plug according to claim 1, characterized in that: The pressure cover buckle includes a pressure cover hook and a pressure cover groove. The pressure cover hook is disposed on the pressure cover, and the pressure cover groove is disposed on the bottom shell.

6. The fuse-type temperature control plug according to claim 5, characterized in that: The pressure cover slot has multiple layers, and the multiple pressure cover slots are arranged sequentially on the side wall of the bottom shell along the height direction of the bottom shell.

7. The fuse-type temperature control plug according to claim 1, characterized in that: The bottom shell is provided with a copper ring limiting groove, and a copper ring is provided in the copper ring limiting groove. The copper ring is fitted onto the power cord. The copper ring includes a limiting part and an anti-detachment part. The anti-detachment part is larger than the limiting part. The limiting part is located in the copper ring limiting groove, and the anti-detachment part is located in the bottom shell.

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