Current detector

Abstract

The utility model provides a current detector, include: resistance body, connector, two connector respectively with resistance body one end links, one radiator, the radiator crosses one connector and resistance body, the utility model discloses a current detector, through setting only one radiator crosses one connector and resistance body, can be in to resistance body fully heat dissipation while, will not cause the interference to current precision operation, and need not complex installation process, be convenient for fixed.

Description

Technical Field

[0001] This utility model relates to the field of current detection technology, and specifically to a current detector. Background Technology

[0002] Existing current detectors often use resistors as the detection and sampling devices. When a large current passes through, the resistor will heat up, causing the accuracy to drift. Therefore, it is necessary to add a heat sink to the resistor. However, considering that the heat sink is usually a conductor, in order to avoid the current passing through the heat sink and affecting the accuracy of the current detector, the heat sink is often divided into multiple pieces and installed independently. Moreover, a certain distance must be maintained between multiple heat sinks to ensure that the creepage distance meets the requirements, which makes the installation method complicated and inconvenient to fix. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a current detector that, by setting only one heat sink to connect one connector and one resistor, can fully dissipate heat from the resistor without interfering with the accuracy of current operation. Moreover, it does not require a complicated installation process and is easy to fix.

[0004] The technical solution adopted in this utility model is as follows: A current detector includes: a resistor; two connectors respectively connected to one end of the resistor; and a heat sink bridging one of the connectors and the resistor.

[0005] In addition, the current detector proposed according to this utility model may also have the following additional technical features: According to one embodiment of the present invention, the connector is provided with a mounting hole, and the heat sink is fixed above the connector and the resistor through the mounting hole.

[0006] According to one embodiment of the present invention, the heat sink includes a contact portion and a heat dissipation portion, the contact portion being in direct contact with a connector and a resistor, and the heat dissipation portion extending away from the resistor.

[0007] According to one embodiment of the present invention, the heat dissipation part includes a plurality of fins, and there are gaps between the plurality of fins.

[0008] According to one embodiment of the present invention, the plurality of fins are parallel to each other.

[0009] According to one embodiment of the present invention, the resistive element is a manganese copper resistive element.

[0010] According to one embodiment of the present invention, a connection hole is provided on the side of the connector away from the resistor, and the connection hole is used to connect a DC current lead.

[0011] The beneficial effects of this utility model are: The current detector of this invention, by setting only one heat sink to connect one connector and one resistor, can fully dissipate heat from the resistor without interfering with the accuracy of current operation, and does not require a complicated installation process, making it easy to fix. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the current detector according to an embodiment of the present invention; Figure 2 This is an exploded view of a current detector according to an embodiment of the present invention.

[0013] Figure label: 1. Resistor; 2. Connector; 21. Mounting hole; 22. Connection hole; 3. Heat sink; 31. Contact part; 32. Heat dissipation part. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] like Figure 1 As shown, the current detector of this embodiment includes: a resistor 1, a connector 2, and a heat sink 3. Two connectors 2 are respectively connected to one end of the resistor 1, and the connectors 2 can be made of conductive material. The heat sink 3 bridges one connector 2 and the resistor 1. The resistor 1 can be a manganin resistor 1. In some other embodiments of this invention, to meet practical needs, the resistor 1 can also be made of alloy materials such as constantan. This embodiment does not impose any limitations.

[0016] It is understandable that, since the main heat source of the current detector is on the resistor 1, the current detector of this utility model embodiment, by setting only one heat sink 3 to connect one connector 2 and the resistor 1, can fully dissipate heat from the resistor 1 without interfering with the current accuracy operation, and does not require a complicated installation process, making it easy to fix.

[0017] like Figure 2As shown, in one embodiment of this utility model, the connector 2 may be provided with a mounting hole 21, and the heat sink 3 can be fixed to the connector 2 and the resistor 1 above the mounting hole 21 by means of screw connection, snap-fit, or other methods. In some other embodiments of this utility model, the heat sink 3 can also be directly glued to the connector 2, and this embodiment does not impose any limitations.

[0018] In one embodiment of the present invention, the heat sink 3 may include a contact portion 31 and a heat dissipation portion 32, wherein the contact portion 31 is in direct contact with a connector 2 and a resistor 1, and the heat dissipation portion 32 extends away from the resistor 1, so that the heat on the connector 2 and the resistor 1 can be quickly conducted to the air away from the resistor 1 through the contact portion 31 along the heat dissipation portion 32.

[0019] Preferably, the heat dissipation part 32 may include multiple fins, and there may be gaps between the multiple fins to increase the heat dissipation area so that airflow can quickly remove the heat on the heat dissipation part 32 through the gaps between the fins.

[0020] Preferably, the multiple fins can be parallel plate-shaped fins, which makes airflow smoother and easier to process. In some other embodiments of this utility model, the shape of the fins can also be designed as corrugated, V-shaped, etc., and this embodiment is not limited thereto.

[0021] In one embodiment of this utility model, a connection hole 22 is provided on the side of the connector 2 away from the resistor 1. The connection hole 22 is used to connect a DC current lead. Specifically, the connection hole 22 can be a threaded hole. The DC current lead can be connected to the connector 2 through a threaded guide post installed in the connection hole 22. In some other embodiments, the DC current lead can also be directly tied to the connection hole 22, or passed through the connection hole 22 and soldered to the connector 2. This embodiment does not impose any limitations.

[0022] In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "connection", "linking", "fixing" and other such terms should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components.

[0024] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

Claims

1. A current detector, characterized in that, include: Resistor (1); Connector (2), the two connectors (2) are respectively connected to one end of the resistor (1); A heat sink (3) is connected across a connector (2) and a resistor (1).

2. The current detector according to claim 1, characterized in that, The connector (2) is provided with a mounting hole (21), and the heat sink (3) is fixed above the connector (2) and the resistor (1) through the mounting hole (21).

3. The current detector according to claim 1, characterized in that, The heat sink (3) includes a contact portion (31) and a heat dissipation portion (32). The contact portion (31) is in direct contact with one of the connectors (2) and the resistor (1). The heat dissipation portion (32) extends away from the resistor (1).

4. The current detector according to claim 3, characterized in that, The heat dissipation part (32) includes a plurality of fins, and there are gaps between the plurality of fins.

5. The current detector according to claim 4, characterized in that, The multiple fins are parallel to each other.

6. The current detector according to claim 1, characterized in that, The resistor (1) is a manganese copper resistor (1).

7. The current detector according to claim 1, characterized in that, The connector (2) has a connection hole (22) on the side away from the resistor (1), and the connection hole (22) is used to connect a DC current lead.

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