A high power plug-in alloy resistor

Abstract

The utility model relates to the technical field of circuit elements, and specifically to a high-power plug-in alloy resistor, comprising a resistor housing, a sealing shell component, a connecting component and a heat dissipation component, wherein the heat dissipation component comprises a heat sink, a resistor core, an insulating sheet and quartz sand, wherein the heat sink is fixedly mounted in the resistor housing, the resistor core is fixedly mounted on the heat sink, the insulating sheet is fixedly mounted on the resistor core, and the quartz sand is fixedly mounted in the resistor housing, the resistor housing is welded and fixed on a circuit board through pins, and is electrically conductive through a conductive block, the resistor core emits heat during the flow of current, the emitted heat is dissipated through the heat sink, the high temperature generated by the resistor core is effectively taken away, and the performance is improved, while under the action of the insulating sheet and the quartz sand, the resistor core is protected, and the heat generated by the resistor core can be quickly conducted to the heat sink for heat dissipation, thereby effectively dissipating the generated heat and improving the service life of the resistor.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit elements, in particular to a high-power plug-in alloy resistor. Background Art

[0002] Alloy resistors are a special type of resistor that mainly detects current and can provide high power with excellent electrical performance. Alloy resistors are widely used in the field of electronics and can be used for various functions such as measurement, control, protection, load and regulation.

[0003] The existing patent CN213815686U is a plug-in type aluminum shell resistor for new energy, including a resistor shell, and concave-convex strips are fixed inside both sides of the resistor shell, the concave-convex strips are protruding from the inner wall of the resistor shell and recessed from the outer wall of the resistor shell, a ceramic sheet is placed inside the resistor shell, a resistor core is mounted on the ceramic sheet, alloy wire is evenly wound on the resistor core, the resistor core and the ceramic sheet are sealed inside the resistor shell, the resistor shell seals the internal cavity through an encapsulation sheet, and the resistor core is connected to a pin that passes through the surface of the encapsulation sheet for leading out electrodes. The utility model has a simple structure, improves the durability of the resistor during short circuit, and has high safety.

[0004] However, when using the alloy resistor of the prior art, since the alloy resistor generates heat during use, the generated heat cannot be effectively dissipated, thereby reducing the service life of the resistor. Utility Model Content

[0005] The utility model aims to provide a high-power plug-in alloy resistor, which solves the problem that the alloy resistor generates heat during use, and the generated heat cannot be effectively dissipated, thereby reducing the service life of the resistor.

[0006] To achieve the above-mentioned purpose, the utility model provides a high-power plug-in alloy resistor, including a resistor housing, a sealing shell assembly, a connecting assembly and a heat dissipation assembly, wherein the sealing shell assembly is installed on the resistor housing, the connecting assembly is installed on the resistor housing, the heat dissipation assembly includes a heat sink, a resistor core, an insulating sheet and quartz sand, the heat sink is fixedly installed in the resistor housing, the resistor core is fixedly installed on the heat sink, the insulating sheet is fixedly installed on the resistor core and is located on the side of the resistor core away from the heat sink, and the quartz sand is fixedly installed in the resistor housing.

[0007] Wherein, the sealing shell assembly includes a sealing plate and a sealing strip, the sealing plate is installed on the resistor housing; and the sealing strip is fixedly installed on the sealing plate.

[0008] Wherein, the sealing plate has a groove, the groove is located on a side of the sealing plate close to the sealing strip, and the groove cooperates with the sealing strip.

[0009] Wherein, the connection component includes a conductive block and pins. The number of the conductive blocks is two. The two conductive blocks are respectively mounted on the resistor core, and the pin is mounted on each conductive block.

[0010] The resistor housing has a through hole, the through hole is located on a side of the resistor housing close to the conductive block, and the through hole cooperates with the conductive block.

[0011] The utility model discloses a high-power plug-in alloy resistor, wherein the heat sink is fixedly installed in the resistor housing, the resistor core is fixedly installed on the heat sink, the insulating sheet is fixedly installed on the resistor core, and the quartz sand is fixedly installed in the resistor housing. During the assembly process, the sealing plate is fixed to the resistor housing by means of the sealing strip and welding, the resistor housing is welded and fixed on the circuit board by means of the pins, and the resistor core is electrically conductive by means of the conductive block so that the resistor core is used. The resistor core will emit heat during use, and the emitted heat will be dissipated through the heat sink, effectively taking away the high temperature generated by the resistor core and improving the performance. At the same time, under the action of the insulating sheet and the quartz sand, the resistor core is protected, and the heat generated by the resistor core can be quickly conducted to the heat sink for heat dissipation, thereby effectively dissipating the generated heat and improving the service life of the resistor. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0013] Figure 1 It is a schematic diagram of the overall structure of the high-power plug-in alloy resistor of the utility model.

[0014] Figure 2 It is a schematic diagram of the installation structure of the sealing plate of the utility model.

[0015] Figure 3 It is a schematic diagram of the installation structure of the resistor core of the utility model.

[0016] In the figure: 101 - resistor housing, 102 - heat sink, 103 - resistor core, 104 - insulating sheet, 105 - quartz sand, 106 - sealing plate, 107 - sealing strip, 108 - groove, 109 - conductive block, 110 - pin, 111 - through hole. DETAILED DESCRIPTION

[0017] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0018] See also Figures 1 to 3 ,in Figure 1 This is a schematic diagram of the overall structure of the high-power plug-in alloy resistor of the utility model; Figure 2 It is a schematic diagram of the installation structure of the sealing plate of the utility model; Figure 3 It is a schematic diagram of the installation structure of the resistor core of the utility model.

[0019] The utility model provides a high-power plug-in alloy resistor, comprising a resistor housing 101, a sealing shell component, a connecting component and a heat dissipation component, wherein the sealing shell component is mounted on the resistor housing 101, and the connecting component is mounted on the resistor housing 101. The resistor housing 101 is made of aluminum alloy, has excellent heat dissipation performance and weather resistance, and is suitable for high-power and high-temperature applications. The resistor housing 101 supports the heat dissipation component; the sealing shell component makes the interior of the resistor housing 101 in a sealed state to protect the heat dissipation component; the connecting component fixes the resistor housing 101 at a specified position.

[0020] The heat dissipation assembly includes a heat sink 102, a resistor core 103, an insulating sheet 104 and quartz sand 105. The heat sink 102 is fixedly installed in the resistor housing 101, the resistor core 103 is fixedly installed on the heat sink 102, the insulating sheet 104 is fixedly installed on the resistor core 103 and is located on a side of the resistor core 103 away from the heat sink 102, and the quartz sand 105 is fixedly installed in the resistor housing 101. The heat sink 102 is made of brass sheet, which has good heat dissipation effect and can effectively take away the high temperature generated by the large current flowing through the resistor core 103, thereby improving the performance of the resistor; the resistor core 103 is the core of the resistor, which determines the resistivity, temperature coefficient and accuracy of the resistor; the insulating sheet 104 is made of ceramic sheet, which has good insulation performance, good thermal conductivity, and high temperature resistance, and can transfer the heat generated by the resistor core 103 to the heat sink 102; the quartz sand 105 protects the resistor core 103 to avoid melting through and causing short circuit and leakage of the equipment.

[0021] Secondly, the sealing shell assembly includes a sealing plate 106 and a sealing strip 107. The sealing plate 106 is mounted on the resistor housing 101; the sealing strip 107 is fixedly mounted on the sealing plate 106. The sealing plate 106 is made of aluminum alloy and is fixedly mounted on the resistor housing 101 by welding. The sealing plate 106 supports the sealing strip 107; the sealing strip 107 is made of rubber and plays a sealing role to prevent external water vapor from entering the resistor housing 101 and causing internal moisture short circuit.

[0022] Again, the sealing plate 106 has a groove 108, and the groove 108 is located on a side of the sealing plate 106 close to the seal 107, and the groove 108 cooperates with the seal 107. The sealing plate 106 is provided with the groove 108, and the groove 108 accommodates the seal 107, supports the seal 107, and fixes the seal 107 in the groove 108.

[0023] Next, the connection assembly includes a conductive block 109 and a pin 110. There are two conductive blocks 109, and the two conductive blocks 109 are respectively mounted on the resistor core 103. The pin 110 is mounted on each conductive block 109. There are two conductive blocks 109, and the two conductive blocks 109 are respectively located on both sides of the resistor core 103. The conductive block 109 transmits the current guided by the pin 110 to the resistor core 103 to generate the expected resistance value. The direction of the current conduction of the two conductive blocks 109 is unidirectional, and the current can only be transmitted from one conductive block 109 to another conductive block 109 in one direction to avoid short circuit. The pin 110 connects the resistor housing 101 to the circuit board, so that the current is transmitted to the resistor core 103 through the pin 110 and the conductive block 109 to obtain the corresponding resistance value.

[0024] Then, the resistor housing 101 has a through hole 111, and the through hole 111 is located on a side of the resistor housing 101 close to the conductive block 109, and the through hole 111 cooperates with the conductive block 109. The through holes 111 are opened on both sides of the resistor housing 101, and the through holes 111 accommodate the conductive block 109, so that one end of the conductive block 109 extends out through the through hole 111, and the through hole 111 also supports the conductive block 109.

[0025] When a high-power plug-in alloy resistor of the present embodiment is used, during the assembly process, the sealing plate 106 is fixed to the resistor housing 101 by the sealing strip 107 and welding, the resistor housing 101 is welded and fixed to the circuit board by the pin 110, and the conductive block 109 is used for conducting electricity so that current flows through the resistor core 103. The resistor core 103 will emit heat during the current flow, and the emitted heat is dissipated through the heat sink 102, effectively taking away the high temperature generated by the resistor core 103 and improving the performance. At the same time, under the action of the insulating sheet 104 and the quartz sand 105, the resistor core 103 is protected, and the heat generated by the resistor core 103 can be quickly conducted to the heat sink 102 for heat dissipation, so that the generated heat can be effectively dissipated, thereby increasing the service life of the resistor.

[0026] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A high-power plug-in alloy resistor, comprising a resistor housing, a housing assembly and a connecting assembly, wherein the housing assembly is mounted on the resistor housing, and the connecting assembly is mounted on the resistor housing, characterized in that: Also included is a heat dissipation assembly; The heat dissipation assembly includes a heat sink, a resistor core, an insulating sheet and quartz sand. The heat sink is fixedly installed in the resistor housing, the resistor core is fixedly installed on the heat sink, the insulating sheet is fixedly installed on the resistor core and is located on a side of the resistor core away from the heat sink, and the quartz sand is fixedly installed in the resistor housing.

2. The high power plug-in alloy resistor according to claim 1, characterized in that: The sealing shell assembly includes a sealing plate and a sealing strip, wherein the sealing plate is mounted on the resistor housing; and the sealing strip is fixedly mounted on the sealing plate.

3. The high power plug-in alloy resistor according to claim 2, characterized in that: The sealing plate has a groove, the groove is located on a side of the sealing plate close to the sealing strip, and the groove cooperates with the sealing strip.

4. The high power plug-in alloy resistor according to claim 1, characterized in that: The connection assembly includes a conductive block and pins. There are two conductive blocks. The two conductive blocks are respectively mounted on the resistor core, and each conductive block is mounted with the pin.

5. The high power plug-in alloy resistor according to claim 4, characterized in that: The resistor housing has a through hole, the through hole is located on a side of the resistor housing close to the conductive block, and the through hole matches the conductive block.

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