Electronic equipment resistor suitable for wide temperature range

Abstract

The utility model relates to the technical field of resistors, in particular to an electronic equipment resistor suitable for a wide temperature range. The resistor comprises a resistor body, supporting assemblies are movably connected to the positions, close to the two ends, of the bottom of the resistor body, and protection assemblies are arranged between the outer wall of the resistor body and the two supporting assemblies. Through collaborative design of the protection assembly and the supporting assembly, the reliability problem of a traditional winding resistor in a wide-temperature and vibration environment is solved. The protection assembly adopts an alloy spiral ring to wind a resistor body, a gap is reserved to buffer thermal expansion and cold contraction, and material oxidation and resistance drift are inhibited; the spiral structure and the gap form an elastic buffer space, vibration energy is absorbed, and welding spot stress concentration is avoided. The supporting assembly is movably connected with the bottom of the body through an L-shaped honeycomb supporting plate, disperses vibration stress, adapts to size changes and is in flexible connection with the end in cooperation with fine adjustment of screws, and structural stability is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of resistor technology, and more specifically, to a resistor for electronic devices suitable for a wide temperature range. Background Technology

[0002] As critical passive electronic components, resistors in electronic devices fulfill functions such as current limiting, voltage regulation, and power distribution through the inherent resistive properties of their materials. Their performance directly impacts the stability and reliability of circuits. In harsh applications such as aerospace and automotive electronics, traditional resistors face significant challenges: thermal expansion and oxidation of materials over a wide temperature range (-55℃ to 200℃ or even higher) can lead to resistance drift and performance degradation. To address these issues, modern wide-temperature resistors utilize advanced materials such as high-entropy alloys and ceramic composites, combined with multi-layer protection and low-TCR thin-film structure designs, ensuring precise resistance control and long-term stability even under extreme temperature conditions.

[0003] Among various resistor types, wire-wound resistors exhibit unique advantages in wide-temperature applications, but their reliability under vibration environments cannot be ignored. This type of resistor uses a structure where metal alloy wires such as nickel-chromium or manganese-copper are tightly wound around a ceramic or mica skeleton. While it performs excellently in terms of temperature stability, it suffers from significant mechanical reliability defects.

[0004] First, the rigid connection between the resistance wire and the frame causes vibration stress to concentrate at the solder joints and bending points, which can easily lead to metal fatigue. Second, the tightly wound coil structure lacks the necessary buffer space, making it difficult to effectively absorb and disperse vibration energy. Finally, the inherent microscopic defects of the metal resistance wire can become the starting point for crack initiation and propagation under continuous vibration. These structural defects are particularly prominent in high-frequency vibration environments, and in severe cases, they can lead to open-circuit failure of the resistor, directly affecting the reliability of the electronic system under vibration conditions. Utility Model Content

[0005] This invention provides a resistor for electronic devices suitable for a wide temperature range. It solves the problems mentioned in the background art by providing a movable support component near both ends of the resistor body at the bottom, and a protective component between the outer wall of the resistor body and the support component. This provides support for the stability of the resistor body, buffers temperature changes, and fixes the position of the protective component.

[0006] Traditional wire-wound resistors face problems such as resistance drift and performance degradation due to temperature changes when used in a wide temperature range, as well as mechanical reliability defects caused by rigid connections, lack of buffer space, and microscopic defects in metals under vibration, which affect the reliability of electronic systems.

[0007] To achieve the above objectives, the electronic device resistor applicable to a wide temperature range includes a resistor body, with support components movably connected to both ends of the bottom of the resistor body. A protective component is provided between the outer wall of the resistor body and the two support components. The protective component is wrapped around the outer wall of the resistor body and is movably snapped into the support components.

[0008] The support component is used to support the stability of the resistor body, the protection component is used to buffer temperature changes, the support component can fix the position of the protection component, and a gap is left between the protection component and the resistor body.

[0009] Based on this, the support assembly includes support plates, both of which are movably connected to the bottom of the resistor body, and screws are movably engaged inside the support plates.

[0010] The support plate is L-shaped and its interior is composed of multiple honeycomb-shaped plates. The screws are movably engaged within the honeycomb holes of the support plate.

[0011] In another technical solution, the protection component includes a spiral ring located on the outer wall of the resistor body, with ends fixedly connected to both ends of the spiral ring.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] The protective component with a gap between the outer wall of the resistor body and the body can buffer thermal expansion and contraction over a wide temperature range, avoid thermal expansion and oxidation of materials, reduce resistance drift, maintain precise resistance control, ensure stable operation of electronic equipment, and improve temperature adaptability and performance stability.

[0014] The support component is movably connected to the bottom of the resistor body, which plays a stabilizing role, reduces the impact of shaking on the resistor under vibration environment, and enhances structural stability; the protection component is wrapped around the outer wall of the resistor body, and its gaps and spiral structure provide buffer space, changing the traditional rigid connection, effectively absorbing and dispersing vibration energy, avoiding metal fatigue at solder joints and bending parts, preventing micro-defects from causing cracks, improving the mechanical reliability of the resistor under vibration conditions, and ensuring the reliable operation of electronic systems.

[0015] By fixing the position of the support component and the protective component, the two work together to comprehensively solve the problems of traditional wire-wound resistors in wide temperature and vibration environments, improve the resistance performance of electronic devices, and make them suitable for harsh scenarios such as aerospace and automotive electronics, meeting the high requirements for component stability and reliability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall side view structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the overall front view of the present invention;

[0019] Figure 4 This is a schematic diagram of the overall exploded structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the protective component of this utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the support component of this utility model;

[0022] Figure 7 This is a structural schematic diagram of the fixing method of this utility model.

[0023] The meanings of the labels in the diagram are as follows:

[0024] 1. Resistor body;

[0025] 11. Support assembly; 110. Support plate; 111. Screw;

[0026] 12. Protective component; 120. Spiral ring; 121. End. Detailed Implementation

[0027] 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.

[0028] Currently, traditional wire-wound resistors face challenges in wide-temperature applications, including resistance drift and performance degradation due to temperature changes, as well as mechanical reliability issues caused by rigid connections, lack of buffer space, and microscopic defects in metals under vibration, all of which affect the reliability of electronic systems. This invention provides a resistor suitable for electronic devices with a wide temperature range. (See [link to related documentation]). Figures 1-4 As shown, it includes a resistor body 1. Support components 11 are movably connected to the bottom of the resistor body 1 near both ends. A protective component 12 is provided between the outer wall of the resistor body 1 and the two support components 11. The protective component 12 is wrapped around the outer wall of the resistor body 1 and is movably snapped into the inside of the support components 11.

[0029] The support component 11 is used to support the stability of the resistor body 1, and the protection component 12 is used to buffer temperature changes. The support component 11 can fix the position of the protection component 12, and there is a gap between the protection component 12 and the resistor body 1.

[0030] In practice, the support assembly 11 includes support plates 110, both of which are movably connected to the bottom of the resistor body 1, and screws 111 are movably engaged inside the support plates 110.

[0031] See Figure 6 and Figure 7 As shown, the support plate 110 is L-shaped, and the interior of the support plate 110 is composed of multiple honeycomb plates. The screws 111 are movably engaged inside the honeycomb holes of the support plate 110.

[0032] In practice, two support plates 110 are movably connected to the bottom of the resistor body 1 near both ends, forming a stable support structure. When the resistor is operating normally or affected by external vibrations, the support plates 110 can disperse the force on the resistor body 1. The L-shaped design of the support plates 110 increases the contact area and support angle with the mounting surface or other supporting components, making the support more stable.

[0033] For example, in a vibration environment, the resistor body 1 may sway, but the support plate 110 can distribute the force generated by the vibration to various parts of the support plate 110 through its movable connection with the resistor body 1, avoiding the force from being concentrated on a certain point of the resistor body 1, thereby reducing the impact of swaying on the resistor and enhancing the structural stability of the resistor body 1.

[0034] Furthermore, since the support plate 110 is composed of multiple honeycomb panels, this honeycomb structure has excellent buffering performance and elasticity. When the resistor is subjected to vibration or impact, the honeycomb structure can absorb and disperse energy, playing a buffering role. At the same time, the presence of the honeycomb structure gives the support plate 110 a certain degree of elastic deformation capability, which can adapt to dimensional changes in the resistor body 1 caused by temperature changes or other factors to a certain extent.

[0035] For example, over a wide temperature range, the resistor body 1 may undergo thermal expansion and contraction, resulting in slight changes in its dimensions. In this case, the honeycomb structure of the support plate 110 can adapt to this dimensional change through elastic deformation without exerting excessive constraint or compression on the resistor body 1, thus ensuring the normal operation of the resistor body 1.

[0036] Finally, the screw 111 is movably engaged inside the honeycomb holes of the support plate 110. This serves two purposes: firstly, it secures the support plate 110, preventing unnecessary displacement or shaking during use; secondly, the movable engagement allows for some fine-tuning of the support plate 110.

[0037] For example, when the resistor experiences a slight positional deviation during installation or when the position of the support plate 110 changes slightly due to external factors during use, the screw 111 can move and adjust within the honeycomb holes, allowing the support plate 110 to return to its proper support position and ensuring the stable support effect of the support assembly 11 on the resistor body 1. Simultaneously, the cooperation between the screw 111 and the honeycomb holes further enhances the structural strength of the support plate 110 and improves its support capacity.

[0038] Figure 5 In the middle, the protection component 12 includes a spiral ring 120, which is located on the outer wall of the resistor body 1, and both ends of the spiral ring 120 are fixedly connected to end heads 121.

[0039] Additionally, see Figure 2 and Figure 3 As shown, the spiral ring 120 is wound around the outer wall of the resistor body 1, and a gap is left between the spiral ring 120 and the outer wall of the resistor body 1.

[0040] Furthermore, the spiral ring 120 is made of alloy material, and the end 121 is made of iron wire; the end 121 is movably wrapped inside the multiple honeycomb holes of the support plate 110.

[0041] The spiral ring 120 is made of an alloy material, which typically possesses good thermal stability and a certain degree of elasticity. In a wide temperature range, when the resistor body 1 expands and contracts due to temperature changes, the gap between the spiral ring 120 and the outer wall of the resistor body 1 acts as a buffer space.

[0042] For example, when the temperature rises, the resistor body 1 will expand, but due to the existence of the gap, the spiral ring 120 will not exert excessive pressure on the resistor body 1, thus avoiding resistance drift and performance degradation caused by pressure. At the same time, the alloy spiral ring 120 itself can also adapt to temperature changes to a certain extent, absorbing and buffering the stress caused by thermal expansion and contraction through its own elastic deformation, maintaining the stable performance of the resistor body 1.

[0043] In practical implementation, due to the spiral structure of the spiral ring 120 and the gap between it and the resistor body 1, it can effectively absorb and disperse vibration energy in a vibration environment. When the resistor is subjected to vibration, the spiral ring 120 can undergo a certain degree of elastic deformation, converting the vibration energy into its own elastic potential energy, thereby reducing the impact of vibration on the resistor body 1.

[0044] Unlike the rigid connection between the resistance wire and the frame in traditional wire-wound resistors, this helical structure with gaps provides the necessary buffer space for the resistor, avoiding the concentration of vibration stress at the solder joints and bending parts, preventing metal fatigue and cracking, and improving the mechanical reliability of the resistor in vibration environments.

[0045] Secondly, by using iron wire as the end 121, which is movably wound around the multiple honeycomb holes of the support plate 110, the protection component 12 and the support component 11 are not only connected together and the position of the spiral ring 120 is fixed, but also the protection component 12 and the support component 11 can work together.

[0046] For example, under conditions of vibration or temperature change, the support assembly 11 ensures stable support for the resistor body 1 through the support plate 110 and screws 111, while the protection assembly 12 buffers the effects of temperature and vibration through the spiral ring 120. The connection between the end 121 and the support plate 110 allows the forces between the two to be mutually transmitted and coordinated, further enhancing the stability and reliability of the entire resistor in complex environments.

[0047] Working principle:

[0048] Through the synergistic effect of the support component 11 and the protection component 12, stable operation and improved vibration resistance are achieved over a wide temperature range. Specifically, the alloy spiral ring 120 of the protection component 12 is wound around the outer wall of the resistor body 1 with a micro-gap. When temperature changes cause thermal expansion and contraction of the resistor body 1, the spiral ring 120 absorbs stress through elastic deformation, and the gap avoids resistance drift caused by rigid compression.

[0049] The spiral ring 120 is made of an alloy material with good thermal stability, and its elastic modulus changes little with temperature, which can suppress the structural stress concentration caused by the difference in the thermal expansion coefficient of the material.

[0050] Furthermore, the L-shaped support plate 110 of the support component 11 is made of honeycomb material and is movably connected to the bottom of the resistor body 1 to form an elastic support. When vibration is transmitted to the resistor, the honeycomb structure absorbs energy through plastic deformation, while the L-shaped design expands the support area, distributing the vibration stress to various parts of the support plate 110 and avoiding concentrated stress at the weld points;

[0051] The spiral shape and gap of the spiral ring 120 together form a "spring-damping" system. During vibration, the spiral ring 120 can elastically deform along the tangential direction, converting vibration energy into the elastic potential energy of the ring body. Its non-contact design with the resistor body 1 completely eliminates the rigid connection defects of traditional wire-wound resistors.

[0052] The spiral ring 120 is flexibly connected to the support component 11 by winding the wire end 121 of the protective component 12 around the honeycomb holes of the support plate 110. When temperature changes cause the spiral ring 120 to expand or contract, the end 121 can move slightly within the honeycomb holes, which maintains structural stability and releases thermal stress. During vibration, the frictional damping between the end 121 and the honeycomb structure further attenuates energy.

[0053] Finally, the movable snap-fit ​​design of the screw 111 and the honeycomb hole of the support plate 110 allows the support assembly 11 to be finely adjusted within a range of ±10°, compensating for unevenness of the mounting surface caused by temperature deformation or vibration, and ensuring that the support force always acts perpendicularly on the resistor body 1.

[0054] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An electronic device resistor suitable for a wide temperature range, comprising a resistor body (1), characterized in that: The resistance body (1) bottom near both ends are movably connected with support assembly (11), the resistance body (1) outer wall and two support assembly (11) between being equipped with protection assembly (12), the protection assembly (12) winding in resistance body (1) outer wall, the protection assembly (12) movably clamped in support assembly (11) inside; The support assembly (11) is used to support the stability of the resistance body (1), the protection assembly (12) is used to buffer temperature change, the support assembly (11) can fix the position of the protection assembly (12), and the protection assembly (12) and the resistance body (1) are left with a gap.

2. The electronic device resistor suitable for a wide temperature range according to claim 1, characterized in that: The support assembly (11) includes a support plate (110), and the two support plates (110) are movably connected to the bottom of the resistance body (1).

3. The electronic device resistor suitable for a wide temperature range according to claim 2, characterized in that: The support plate (110) is L-shaped, and the inside of the support plate (110) is composed of a plurality of honeycomb plates.

4. The electronic device resistor suitable for a wide temperature range according to claim 3, characterized in that: The screw (111) is movably clamped in the honeycomb hole of the support plate (110).

5. The electronic device resistor suitable for a wide temperature range according to claim 4, characterized in that: The protection assembly (12) includes a spiral ring (120), and the spiral ring (120) is located on the outer wall of the resistance body (1).

6. The electronic device resistor suitable for a wide temperature range according to claim 5, characterized in that: The spiral ring (120) is wound on the outer wall of the resistance body (1), and a gap is left between the spiral ring (120) and the outer wall of the resistance body (1).

7. The electronic device resistor suitable for a wide temperature range according to claim 6, characterized in that: The spiral ring (120) is made of alloy material, and the end (121) is made of iron wire material. The end (121) is movably wound in the plurality of honeycomb holes of the support plate (110).

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