A resistance assembly

Abstract

The utility model discloses a resistance assembly relates to resistance technical field. It includes two side by side pins, resistance, shell and cover, and the pin one end is bent and forms the connecting part of welding convex point, and the resistance both ends "n" type terminal outer wall is welded with welding convex point, and the shell outer wall is equipped with the reinforcing rib of area heat dissipation fin, and the cover seals the shell opening, and the pin passes the cover and extends into the shell and exposes another end, and the shell inner chamber fills heat -conducting silica gel. The utility model seals and packages the resistance, and welding convex point and "n" type terminal promote connection stability, and heat -conducting silica gel cooperates heat dissipation fin high -efficient heat dissipation, and inhibits resistance value drift, and the exposed pin can be matched with the special connector and plugs, and the installation maintenance is convenient, and the protection and structure strength are excellent, and adapt to the harsh and high -power working condition.

Description

Technical Field

[0001] This utility model relates to the field of resistor technology, specifically to a resistor assembly. Background Technology

[0002] As a core passive component in electronic circuits, resistors play an indispensable role in circuit functions such as current limiting, voltage division, load control, and filtering due to their impedance to current. They are widely used in many fields such as consumer electronics, industrial control, automotive electronics, and power equipment, and are fundamental components that ensure the precise operation of electronic and electrical systems.

[0003] Currently, most mainstream resistor products on the market exist as independent single units. Their structure typically consists only of the resistor body and straight terminals extending from both ends. In practical applications, they need to be directly exposed and mounted on circuit boards or inside equipment, and electrical connections are achieved by soldering the terminals to external circuits. However, this traditional independent usage mode has gradually revealed many performance defects under complex operating conditions, making it difficult to meet the requirements of modern equipment for high reliability, high protection, and efficient heat dissipation of components.

[0004] In terms of protection, exposed resistors lack effective physical protection structures, making them susceptible to damage or terminal deformation during transportation and installation due to mechanical collisions and compression. During use, dust, moisture, oil, and other impurities in the external environment can easily adhere to the resistor surface or penetrate the terminal connections, causing problems such as terminal oxidation and corrosion, and increased contact resistance. This not only reduces the electrical stability of the resistor but may also lead to localized overheating due to poor contact, posing a safety hazard. Although some scenarios use simple protective shells for post-construction protection, their adaptability is poor and they further hinder heat dissipation, making it difficult to simultaneously meet both protection and heat dissipation requirements.

[0005] In terms of heat dissipation performance, traditional independent resistors mainly rely on natural heat dissipation. However, with the increasing integration of electronic devices, the power density of resistors is constantly increasing, and the heat generation per unit volume is significantly increasing, making natural heat dissipation ineffective. Long-term high-temperature operation can lead to resistance drift and power attenuation, and in severe cases, burn-out failure, shortening the service life. Existing solutions that add additional heat dissipation components suffer from problems such as cumbersome installation, high cost, and poor compatibility with resistors, which are not conducive to the miniaturization design of equipment.

[0006] In terms of connection reliability, the straight terminals of traditional resistors are directly soldered to the external circuit. The soldering area is limited and the positioning accuracy is low, making them prone to poor soldering or false soldering due to fluctuations in the soldering process. At the same time, the terminals lack stable support, and stress concentration can easily occur when subjected to vibration or external force, leading to cracking and failure of the solder joint. In addition, the solder joint needs to be disassembled for maintenance and replacement, which is complicated and can easily damage the surrounding circuits, resulting in low maintenance efficiency.

[0007] In summary, existing standalone exposed resistors suffer from significant drawbacks, including insufficient protection, low heat dissipation efficiency, poor connection reliability, and inconvenient maintenance. These shortcomings are particularly pronounced in high-power, highly integrated, and harsh operating environments, becoming a bottleneck restricting the performance improvement of electronic devices. Therefore, developing an integrated resistor solution that combines high protection, efficient heat dissipation, and reliable connection has become an urgent technical problem to be solved in this field. Utility Model Content

[0008] In view of the shortcomings of the prior art, the present invention provides a resistor assembly.

[0009] The technical solution adopted in this utility model is: a resistor assembly, comprising: Two prongs are arranged side by side, one end of each prong is bent to form a connecting part, and a welding protrusion is provided on the connecting part; A resistor, wherein terminals are provided at both ends of the resistor, the terminals are of an "n" shape, and the welding protrusions are welded to the outer wall of the terminals; The outer shell has several reinforcing ribs spaced apart on its outer wall, and heat dissipation fins are integrally formed on the reinforcing ribs. A cap, which seals the opening of the inner cavity of the outer casing; One end of the connector of the pin passes through the cover and extends into the housing, while the other end extends out of the cover. The inner cavity of the housing is filled with thermally conductive silicone.

[0010] Furthermore, the outer wall of the housing is also provided with a connection structure for connecting with external components.

[0011] Furthermore, the connection structure includes two guide protrusions disposed on the outer wall of the housing and a hook step disposed between the two guide protrusions. The two guide protrusions are arranged in parallel, and the end of the hook step is provided with a first guide slope.

[0012] Furthermore, a heat conduction strip is provided inside the cavity of the outer shell. The heat conduction strip is in contact with the resistor body and conducts heat to the outer surface of the outer shell.

[0013] Furthermore, at least two sealing rings are provided on the inner cavity opening of the outer shell.

[0014] Furthermore, the cover has raised steps on both sides, the inner wall of the outer shell has an insert groove that fits into the raised steps, and a second guide slope is provided on one side of the raised steps.

[0015] Furthermore, the inner wall of the outer shell is provided with a separation step for separating the two pins.

[0016] The beneficial effects of this utility model are: 1. Excellent protection performance: The resistor is encapsulated in a sealed cavity formed by the outer shell and the cover, which effectively isolates the resistor body and connection structure from mechanical collisions and compression, prevents dust, water vapor and oil from entering, avoids terminal oxidation and corrosion, reduces the risk of poor contact, and is suitable for use in harsh working conditions.

[0017] 2. High heat dissipation efficiency: The outer shell is reinforced with integrated heat dissipation fins, which expands the heat dissipation area; the thermally conductive silicone filling the inner cavity quickly conducts the heat of the resistor to the outer shell, and the fins accelerate heat dissipation, solving the problem of insufficient natural heat dissipation of traditional resistors, suppressing resistance drift and power attenuation, and extending service life.

[0018] 3. Stable and reliable connection: The plug connection part is equipped with welding protrusions, which are welded to the outer wall of the "n" type resistor terminal, increasing the welding contact area and ensuring precise positioning; the plug through the cover forms a stable support, reducing stress concentration at the welding point caused by vibration or external force, avoiding poor welding and cracking, and improving connection stability.

[0019] 4. Balancing structural strength and ease of maintenance: Reinforcing ribs on the outer shell enhance the overall structural strength and prevent deformation; the exposed pins can be plugged into a dedicated connector, replacing traditional direct soldering. Subsequent maintenance and replacement do not require disassembling the solder joints, making the operation efficient and avoiding damage to surrounding circuits.

[0020] In addition to the objectives, features and advantages described above, this utility model has other objectives, features and advantages.

[0021] The present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] Figure 2 This is an exploded view of the present invention.

[0024] Figure 3 This is a schematic diagram of the outer shell.

[0025] Figure 1-3 In the middle: 1. Pin; 2. Connector; 3. Welding protrusion; 4. Resistor; 5. Terminal; 6. Housing; 7. Reinforcing rib; 8. Heat dissipation fins; 9. Cover; 10. Guide protrusion; 11. Hook step; 12. First guide slope; 13. Heat conduction strip; 14. Sealing ring; 15. Raised step; 16. Insertion slot; 17. Second guide slope; 18. Separation step. Detailed Implementation

[0026] 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.

[0027] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0028] This utility model provides a resistor assembly.

[0029] In this embodiment, refer to Figure 1-3 The resistor assembly includes: Two pins 1 are arranged side by side, one end of each pin 1 is bent to form a connecting part 2, and a welding protrusion 3 is provided on the connecting part 2; Resistor 4, wherein terminals 5 are provided at both ends of resistor 4, wherein terminals 5 have an “n” shaped structure, and the welding protrusions are welded to the outer wall of the terminals; The outer shell 6 has a plurality of reinforcing ribs 7 spaced apart on its outer wall, and heat dissipation fins 8 are integrally formed on the reinforcing ribs 7. The cover 9 is sealed and fits onto the inner cavity opening of the outer shell; One end of the connector of the pin passes through the cover and extends into the housing, while the other end extends out of the cover. The inner cavity of the housing is filled with thermally conductive silicone.

[0030] The above technical solution adopts an integrated structure of "pin-resistor-shell-cap". The pin is bent to form a connecting part with welding protrusions, which is welded to the outer wall of the "n" type terminal of the resistor to achieve positioning and fixation. The cap seals the opening of the shell and allows the pin to pass through. The shell is equipped with reinforcing ribs with heat dissipation fins, and the inner cavity is filled with thermally conductive silicone, constructing an integrated system of "encapsulation-heat dissipation-connection". The resistor is sealed and protected, isolating it from mechanical damage and impurity intrusion; the welding protrusions and "n" type terminal increase the welding area, making the connection more stable; the thermally conductive silicone, together with the heat dissipation fins, accelerates heat dissipation and suppresses resistance drift; the exposed pins can be plugged into a dedicated connector, replacing traditional soldering and improving installation convenience.

[0031] Specifically, the outer wall of the housing is also provided with a connection structure for connecting with external components.

[0032] In this embodiment, a connecting structure is added to the outer wall of the housing. This mechanism forms a mechanical connection with external components, providing a precise assembly positioning point for the resistor assembly and the device. This achieves a stable connection between the assembly and the external components, enabling rapid assembly of the resistor assembly and external components without the need for additional fasteners, thus improving assembly efficiency.

[0033] Specifically, the connection structure includes two guide protrusions 10 disposed on the outer wall of the housing and a hook step 11 disposed between the two guide protrusions 10. The two guide protrusions are arranged in parallel, and the end of the hook step is provided with a first guide slope 12.

[0034] In this embodiment, the connecting structure consists of a parallel guide convex plate and a hook step. The guide convex plate provides guidance and positioning for the external components to cooperate, and the hook step guides the external components to quickly engage through the first guide slope at the end, thereby achieving axial limiting and fixing by utilizing the step structure.

[0035] Specifically, a heat conduction strip 13 is provided inside the inner cavity of the outer shell. The heat conduction strip 13 is in contact with the resistor body and conducts heat to the outer surface of the outer shell.

[0036] In this embodiment, a heat conduction strip (such as an aluminum strip) is provided in the inner cavity of the outer shell, so that it is in direct contact with the resistor body, thus constructing an efficient heat conduction path of "resistor-heat conduction strip-outer shell", which directly guides the heat of the resistor core heating point to the outer surface of the outer shell.

[0037] Specifically, at least two sealing rings 14 are provided on the inner cavity opening of the outer shell.

[0038] In this embodiment, the outer shell opening is provided with at least two elastic sealing rings. When the cover is closed, the sealing rings are squeezed to cause them to elastically deform and fill the gap between the cover and the outer shell, forming multiple independent sealing interfaces.

[0039] Specifically, the cover has raised steps 15 on both sides, the inner wall of the outer shell has an insert groove 16 that fits into the raised steps 15, and a second guide slope 17 is provided on one side of the raised steps.

[0040] In this embodiment, the cap has a raised step that forms a concave-convex fit with the outer shell's mounting groove. The second guide slope on the side of the raised step guides the raised step to be accurately embedded into the groove, and the mechanical interlocking enhances the connection and sealing between the cap and the outer shell.

[0041] Specifically, the inner wall of the outer shell is provided with a separation step 18 for separating the two pins.

[0042] In this embodiment, the inner wall of the outer shell cavity is provided with a separation step, which vertically separates the two pins, restricts the lateral displacement of the pins, and forms a stable physical barrier structure.

[0043] Please note to all technical personnel: Although this utility model has been described according to the specific embodiments above, the concept of this utility model is not limited to this utility model. Any modification that utilizes the concept of this utility model will be included within the scope of protection of this patent right.

Claims

1. A resistor assembly, characterized in that... include: Two prongs are arranged side by side, one end of each prong is bent to form a connecting part, and a welding protrusion is provided on the connecting part; A resistor, wherein terminals are provided at both ends of the resistor, the terminals are of an "n" shape, and the welding protrusions are welded to the outer wall of the terminals; The outer shell has several reinforcing ribs spaced apart on its outer wall, and heat dissipation fins are integrally formed on the reinforcing ribs. A cap, which seals the opening of the inner cavity of the outer casing; One end of the connector of the pin passes through the cover and extends into the housing, while the other end extends out of the cover. The inner cavity of the housing is filled with thermally conductive silicone.

2. The resistor assembly according to claim 1, characterized in that: The outer wall of the housing is also provided with a connection structure for connecting with external components.

3. The resistor assembly according to claim 2, characterized in that: The connection structure includes two guide protrusions disposed on the outer wall of the housing and a hook step disposed between the two guide protrusions. The two guide protrusions are arranged in parallel, and the end of the hook step is provided with a first guide slope.

4. The resistor assembly according to claim 1, characterized in that: A heat conduction strip is provided inside the cavity of the outer shell. The heat conduction strip is in contact with the resistor body and conducts heat to the outer surface of the outer shell.

5. The resistor assembly according to claim 1, characterized in that: The inner cavity opening of the outer shell is provided with at least two sealing rings.

6. The resistor assembly according to claim 1, characterized in that: The cover has raised steps on both sides, the inner wall of the outer shell has an insert groove that fits into the raised steps, and a second guide slope is provided on one side of the raised steps.

7. The resistor assembly according to claim 1, characterized in that: The inner wall of the outer casing is provided with a separation step for separating the two pins.

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