TWM589924U - Current overload protector - Google Patents

Abstract

This creation is about a current overload protector. This creation is mainly to detect whether the current value flowing through the processing unit falls within the preset range value. Once it falls within the preset range value, the alarm unit will be activated first. In order to warn people nearby to pay attention to the safety of electricity, when the preset value falls within a certain period of time, the processing unit will immediately drive the on-off unit to form an open circuit to stop the power supply to the load, so as to achieve the purpose of protection. In addition, when the preset range value is exceeded, in addition to the activation of the alarm unit, the operation frequency of the alarm unit will be accelerated at the same time, and the alertness of the people will be increased through the rapid alarm. Similarly, when the preset range value is exceeded After a period of time, the processing unit will also drive the on-off unit to form an open circuit to ensure power safety.

Description

Current overload protector

This new creation is about a power protector, especially a current overload protector.

Press, general household appliances must use the location of the socket when in use, which causes inconvenience in use. Because of this, some people have designed extension cords, which can provide the required power regardless of the distance of the household appliances from the socket. There is no need to be limited by the location of the socket. However, users often use a single extension cord to electrically connect multiple electrical appliances, so that the current exceeds the load. Although the extension cords are generally equipped with overload circuit breakers, most overload circuit breakers are heat accumulation type, which is insufficient. Apart from the fact that when the current exceeds the load, an open circuit cannot be formed immediately, the sudden open circuit method is easy to generate convex waves for the line, and the convex waves are easy to cause damage to the precision electronics that are difficult to recover. Therefore, the creator believes that there should be a product with relevant alarms and warning functions before the current exceeds the load to remind the user to pay attention or prevent and respond in advance to avoid the problem of sudden damage to the electrical appliances.

In view of the deficiencies described in the prior art, the creator of this new type proposes a solution, which is about a current overload protector, including: One input: The input terminal provides electrical connection to a power supply unit. One output: The output end is electrically connected to the input end, and provides an electrical connection to a load. One resistor: The resistor is disposed at a section of the electrical connection path between the input end and the output end. One on-off unit: The on-off unit is provided at a section of the electrical connection path between the input end and the output end. The on-off unit can be used to form an open circuit or path between the input end and the output end. One processing unit: The processing unit is electrically connected to the resistor, the on-off unit and an alarm unit respectively. The processing unit can be used to control the alarm unit when the current value passing through the resistor falls within a preset range value The first operating frequency is activated. When the current value passing through the resistor falls within the preset range value for a first preset time, the switch unit is controlled to form an open circuit. When the current passing through the resistor When the value exceeds the preset range value, the alarm unit is controlled to operate at a second operating frequency, and the second operating frequency is higher than the first operating frequency, when the current value passing through the resistor continues for a second When the preset time exceeds the preset range value, the switch unit is controlled to form an open circuit, and the second preset time is less than the first preset time. The author uses the processing unit to detect the size of the current. When the current flowing through the author falls within the preset range, the processing unit will first control the operation of the alarm unit to remind the user to pay attention to the safety of electricity, or Make early response measures (such as unplugging unused electrical appliances or shutting down precision electrical appliances first), then when the current value detected within the first preset time falls within the preset range, it is used for maintenance For electrical safety, the processing unit will control the on-off unit to form an open circuit to avoid problems such as wire fire. Similarly, when the detected current value exceeds the preset range value, it means that the situation is critical and it is necessary to urgently take relevant countermeasures. Therefore, in addition to activating the alarm unit, the processing unit will also speed up the operation of the alarm unit. Frequency, through the rapid alarm effect, to warn users to react faster to avoid disasters. As described above, when the current value exceeds the preset range value and reaches the second preset time, the processing unit will urgently control the on-off unit to form an open circuit to avoid disasters.

The structure, characteristics and embodiments of the new creation will be explained below with the aid of the drawings, so that your reviewers will have a better understanding of the new creation. Please refer to the first picture, this new creation is about a current overload protector (A). The current overload protector (A) can mainly be implemented as an extension cord, or it can be implemented as one end connected to the mains and the other end connected to the existing The extension cord can be used as an intermediary for power transmission, or as an intermediary for power transmission, to electrically connect the mains and the load, respectively, to provide the load with current overload protection and warning functions. This creation includes: One input (1): Please refer to the first figure and the fourth figure, the input terminal (1) provides electrical connection to a power supply unit (C). Taking this manual as an example, the power supply unit (C) can be a commercial power supply, a battery, a Motors, etc. One output (2): Please refer to the first figure and the second and fourth figures. The output terminal (2) is electrically connected to the input terminal (1) and provides a direct or indirect electrical connection to a load (B). Among them, as shown in the second figure A, when the new model is created as an extension cord, the load (B) refers to information equipment, home appliances, such as computers, ovens, electric cookers, electric fans, etc.; and when the new model is created When used for power transmission intermediary, as shown in the second figure B, the output terminal (2) is indirectly connected to the load (B) through an extension cable, so that the user does not need to replace the home The inherent extension cable only needs to purchase this product as an intermediary between the extension cable and the commercial power supply, which can play the role of warning and power off. In addition, it is worth mentioning that when the author is implemented as a power transmission intermediary rather than as an extension cord, the author can directly connect the load (B) electrically to provide the load (B) with electrical safety and Warning effect. In addition, the input terminal (1) and the output terminal (2) are preferably electrically connected to a power regulating unit (4) respectively, and the power regulating unit (4) can be used to regulate the input power of the input terminal (1) (Such as voltage boost, voltage stabilization, steady current, filtering, etc.), to output a stable voltage and current power supply. One resistor (3): Please refer to the first figure and the fourth figure, the resistor (3) is provided at a portion of the electrical connection path between the input terminal (1) and the output terminal (2). Moreover, the material of the resistor (3) is preferably made of manganese-copper alloy, which not only has the characteristic that the overall volume is smaller than the variable resistor, but also has a relatively low manufacturing cost, and has the advantages of low internal resistance and high current resistance. . One on-off unit (5): Please refer to the first figure and the fourth figure, the on-off unit (5) is provided at a portion of the electrical connection path between the input terminal (1) and the output terminal (2). The on-off unit (5) can be controlled through automation to form a path or an off-state, thereby providing an off-state through the on-off unit (5) when a short circuit or current overload occurs to protect the load from damage. Among them, all those that can be operated to form a path or an open state are the on-off unit (5) described in this creation. Taking this specification as an example, the on-off unit (5) is preferably a relay (5A), Using the characteristics of the relay (5A) to control a larger current with a smaller current, an open circuit can be formed immediately when a stop signal is received to ensure power safety. In addition, the relay (5A) is preferably an electromagnetic relay. One processing unit (6): Please refer to the first figure and the fourth figure, the processing unit (6) is electrically connected to the resistor (3) and the on-off unit (5) an alarm unit (7), the processing unit (6) can be It is used to detect the current value flowing through the resistor (3) and make a corresponding working process. The processing unit (6) mainly determines whether the current value falls within a preset range value, or exceeds the preset range value, thereby forming a two-stage preset range value, and making a difference for each stage preset range value Response measures, the following is a description of each preset range value and its corresponding response measures: First, when the detection result of the current value falls within a preset range value, the processing unit (6) will control the alarm unit (7) to operate at a first operating frequency, so as to warn people around the need to pay attention to electricity Safe, or unplug the electrical appliances in advance to avoid the negative impact of the convex wave generated when the circuit suddenly forms a disconnection on the electrical appliances. When the current value passing through the resistor (3) continues to fall within the preset range value for a first preset time, it means that the power consumption is quite dangerous, and the processing unit (6) will urgently control the pass The breaking unit (5) forms a breaking circuit to avoid disasters. Then, when the processing unit (6) detects that the current value exceeds the preset range value, it indicates that the power usage is quite critical, and at this time, the alarm unit (7) will be controlled to operate at a second operating frequency, And the second working frequency is higher than the first working frequency. By increasing the working frequency of the alarm unit (7), the warning signal generated by the alarm unit (7) is very rapid, which can effectively improve the user's alertness. Make corresponding measures at an accelerated speed, such as unplugging electrical appliances or turning off the main power supply. When the current value exceeds the preset range value for a second preset time, the processing unit (6) will immediately control the on-off unit (5) to form an open circuit, and the second preset time is less than the The first preset time, so as to improve the overall electricity safety of this creation. In the above, the preset range value is preferably 15A to 16.5A to ensure the safety of home electricity. In addition, the alarm unit (7) can be implemented as a buzzer or warning light according to different needs. Those who have an alarm effect are the alarm units (7) referred to in this manual. In addition, please refer to the third figure. It should be noted that when the on-off unit (5) is a relay (5A), or when an additional electrical signal is required to activate the power switch element that forms an open circuit, then the The processing unit (6) needs to be electrically connected to the relay (5A) with a signal line (6A) for transmitting control signals to the relay (5A) as shown in the figure. So, this creation has the following advantages: 1. Provide an alarm effect before the on-off unit (5) is opened. In addition to reminding the user to pay attention to the safety of electricity in advance, it also allows the user to react first, such as turning off electrical appliances, etc. In order to avoid short circuit fire caused by overheating damage of the power supply unit due to electrical overload. 2. Through the setting of the preset range values in the two stages, two different warning frequencies are made, which can effectively remind the user of the urgency of different situations and react immediately. 3. The resistor (3) is made of manganese-copper alloy material, not only the overall volume is smaller than the variable resistance, but also the manufacturing cost is relatively cheap, and has the advantages of low internal resistance and can withstand high current. 4. Because the new creation is equipped with an alarm unit (7) and the on-off unit (5), no matter whether it is applied to power supply equipment such as extension cords or home distribution boxes, there is no need to worry about the use of loads (such as information equipment and household appliances) It is safe from time to time, and can increase the safety of electricity. 5. When the on-off unit (5) is implemented as a relay (5A), it can be directly controlled through the processing unit (6) instead of responding to changes in physical properties, so when the current exceeds the preset value, The relay (5A) will react and open in the shortest time. In summary, this new creation is indeed in line with industrial utilization, and it has not been seen in publications or public use prior to the application, nor is it known to the public, and it is non-obvious and easy to understand, and meets the requirements of patentability. Application. However, what has been stated above is a preferred embodiment of the new creation in the industry, and any equal changes made in the scope of patent application for this new creation are within the scope of the appeal of this case.

(A)‧‧‧Current overload protector (B)‧‧‧load (C)‧‧‧Power supply unit (1)‧‧‧input (2)‧‧‧Output (3)‧‧‧resistor (4)‧‧‧Power regulator unit (5) ‧‧‧ on-off unit (5A)‧‧‧Relay (6)‧‧‧Processing unit (6A)‧‧‧Signal cable (7)‧‧‧Alarm unit

The first figure is a schematic diagram of the connection of the components of the new creation The second picture A is the first embodiment of the new creation. The second picture B is the embodiment of the new creation. The third figure is a schematic diagram of another embodiment of the new creation The fourth diagram is a circuit diagram of an embodiment of the new creation

(1)‧‧‧input

(2)‧‧‧Output

(3)‧‧‧resistor

(4)‧‧‧Power regulator unit

(5) ‧‧‧ on-off unit

(6)‧‧‧Processing unit

(7)‧‧‧Alarm unit

Claims (6)

A current overload protector, including: An input terminal: provide electrical connection to a power supply unit; An output terminal: electrically connected to the input terminal, and providing direct or indirect electrical connection to a load; A resistor: a section of the electrical connection path provided between the input end and the output end; An on-off unit: located at a section of the electrical connection path between the input and the output, the on-off unit can be used to form an open circuit or path between the input and the output; A processing unit: electrically connecting the resistor, the on-off unit, and an alarm unit, respectively, the processing unit can be used to control the alarm unit when the current value passing through the resistor falls within a preset range value Acting at a first operating frequency, when the current value passing through the resistor falls within the preset range value for a first preset time, the switch unit is controlled to form an open circuit, when passing through the resistor When the current value exceeds the preset range value, the alarm unit is controlled to operate at a second operating frequency, and the second operating frequency is higher than the first operating frequency. When the current value through the resistor continues for a When both of the second preset time exceed the preset range value, the switch unit is controlled to form an open circuit, and the second preset time is less than the first preset time. The current overload protector as described in item 1, wherein a power regulating unit is further provided, the power regulating unit is electrically connected to the processing unit and the input terminal respectively, and the power regulating unit can be used to carry out the input power of the input terminal After the adjustment, a stable voltage and current power supply is output to the processing unit and the output terminal. The current overload protector as described in item 2, wherein the preset range value is 15A~16.5A. The current overload protector as described in item 3, wherein the alarm unit is selected from one of the following groups: buzzer or warning light. The current overload protector as described in item 4, wherein the resistor is made of manganese copper alloy. The current overload protector as described in any one of items 1 to 5, wherein the on-off unit is a relay.

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