Ultra-micro resistance with high safety

Abstract

The utility model discloses a supermicro resistance of high security, specifically related to resistance technical field, including resistance body, be provided with connecting assembly on the resistance body, the connecting assembly includes the connecting piece of setting in resistance body one side, the outside of connecting piece and resistance body all sets up the wiring cover, the inner wall one side of wiring cover is provided with linkage block, linkage block is with connecting piece screw thread connection, the both ends of resistance body are provided with electrode respectively, and the bottom of each electrode is provided with pin respectively. The utility model connecting assembly in linkage block and connecting piece are through the thread cooperation, can pass through the relative position of rotating adjustment wiring cover and resistance body, cooperate the locking function of fixed screw and limit nut, can accurate adaptation the installation space of different circuit board, simultaneously, the through -hole on pin can cooperate with the positioning post of circuit board pad, reduces the deviation when welding, reduces the defective rate such as false welding, wrong welding obviously.

Description

Technical Field

[0001] This utility model relates to the field of resistor technology, and more specifically, to an ultra-miniature resistor with high safety. Background Technology

[0002] A resistor is one of the most basic components in electronic circuits, and its core function is to impede the flow of electric current. The magnitude of this impediment is called the "resistance value," and its unit is ohms (Ω), represented by the symbol "R."

[0003] From a physical perspective, resistance arises from the collisions between atoms and electrons within a conductor: when an electric current (the directed movement of electrons) passes through a conductor, electrons collide with atomic nuclei and other electrons in the conductor, slowing their movement and thus creating resistance. The higher the resistance value, the stronger the resistance to current; conversely, the lower the resistance value, the weaker the resistance. In circuits, resistance plays a crucial role. For example, in LED circuits, series resistors limit the current flowing through the LED, preventing it from burning out due to overcurrent. These types of resistors are widely used in precision electronic devices such as smartphones, smartwatches, medical sensors, and automotive autonomous driving modules.

[0004] However, these scenarios have extremely high space requirements, and the resistor needs to work stably in a confined space for a long time. Safety is the core requirement. During welding, high temperatures (such as 260°C in reflow soldering) can easily cause oxidation of the ultra-small electrodes or damage to the resistive film, making it difficult to install and prone to poor welding. Therefore, we provide an ultra-miniature resistor that is easy to install and weld and has high safety. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an ultra-miniature resistor with high security, which aims to solve the problems mentioned in the background art.

[0006] This utility model provides the following technical solution: a highly secure ultra-miniature resistor, comprising a resistor element, wherein a connection component is provided on the resistor element;

[0007] The connection assembly includes a connector disposed on one side of the resistor, and a wiring sleeve is sleeved on the outer side of both the connector and the resistor, and a linkage block is disposed on one side of the inner wall of the wiring sleeve.

[0008] The linkage block is threadedly connected to the connector, and electrodes are respectively provided at both ends of the resistor, with pins provided at the bottom of each electrode.

[0009] Optionally, in one possible implementation, the linkage block extends to the outside of the connector, the linkage block is threadedly connected to the connector, one end of the linkage block is rotatably connected to a positioning screw, a limiting nut is sleeved on the outside of the positioning screw, the limiting nut is threadedly connected to the positioning screw, the limiting nut abuts against the outside of the wiring sleeve, a mounting groove is opened on the outside of the resistor, the connector is embedded in the mounting groove, and through holes are opened on both pins, and the pins are fixedly connected to the electrodes;

[0010] The technical effects and advantages of this utility model are as follows:

[0011] By setting a high-temperature resistant connector sleeve, the connection between the resistor and the electrode can be covered, reducing direct contact between high temperature and the electrode and the resistive film, effectively avoiding electrode oxidation or damage to the resistive film, and solving the problem of easy failure due to high temperature during the welding of existing ultra-miniature resistors.

[0012] The linkage block and connector in the connection assembly are threaded together, and the relative position of the terminal sleeve and the resistor can be adjusted by rotation. With the locking function of the positioning screw and the limit nut, it can accurately adapt to the installation space of different circuit boards. At the same time, the through holes on the pins can cooperate with the positioning posts of the circuit board pads to reduce the offset during soldering and significantly reduce the defect rate of cold solder joints, wrong solder joints and other defects. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this disclosure.

[0014] Figure 1 This is a front view of the overall structure of this utility model.

[0015] Figure 2 This is a side view of the overall structure of this utility model.

[0016] Figure 3 This is a schematic diagram of the resistor, electrode, pin, and connector of this utility model.

[0017] Figure 4 This is a schematic diagram of the wiring sleeve, linkage block, positioning screw and limit nut of this utility model.

[0018] The attached diagram is labeled as follows: 1. Resistor; 2. Connector; 3. Wiring sleeve; 4. Linkage block; 5. Positioning screw; 6. Limit nut; 7. Electrode; 8. Pin; 9. Mounting slot. Detailed Implementation

[0019] 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.

[0020] This embodiment discloses a highly secure ultra-miniature resistor, which aims to solve the problems of electrode oxidation and resistive film damage caused by high temperature during the welding process of existing ultra-miniature resistors, as well as difficulties in installation and positioning and high welding failure rate.

[0021] like Figure 1 As shown, the high-security ultra-miniature resistor described in this embodiment includes a resistor element 1, a connecting component, an electrode 7, and a lead 8. Wherein:

[0022] Resistor Element 1: A miniature metal film resistor, model RC01005JR-0710KL, can be used. Its core function is to impede current flow through the metal film, thus limiting current in the circuit. A mounting slot 9 is provided on the outer side of Resistor Element 1, such as... Figure 3 As shown, it is used to embed connector 2 to improve the overall structural stability.

[0023] Connector 2: It can be a columnar structure made of brass H62 to enhance conductivity. It is embedded in the mounting groove 9 of resistor 1 and is bonded to resistor 1 with conductive adhesive. Its function is to conduct current between resistor 1 and terminal sleeve 3.

[0024] Terminal sleeve 3: Made of high-temperature resistant plastic, it can protect internal components in the high-temperature environment of reflow soldering. It is sleeved on the outside of connector 2 and resistor 1, and a linkage block 4 is integrally formed on one side of the inner wall.

[0025] Linkage block 4: One end of which is welded and fixed to the inner wall of the terminal sleeve 3, and the other end extends to the outside of the connector 2 and is threaded to match the external thread on the outside of the connector 2. By rotating the linkage block 4, the relative position of the terminal sleeve 3 and the resistor 1 can be adjusted to achieve precise positioning during installation.

[0026] Positioning screw 5 and limit nut 6: One end is rotatably connected to linkage block 4, and the other end passes through the side wall of wiring sleeve 3; tightening limit nut 6 can lock the position of linkage block 4 and prevent wiring sleeve 3 from loosening due to vibration during use.

[0027] Electrode 7 and pin 8: Electrode 7 is fixed to both ends of resistor 1 by vacuum sputtering, and its function is to conduct the current of resistor 1 to pin 8. Pin 8 is a tin-plated copper wire, which is fixed to electrode 7 by laser welding, and has through holes, such as... Figure 3 As shown, this is used to precisely align with the solder pads on the circuit board during soldering, reducing the problem of cold solder joints caused by misalignment;

[0028] The specific working principle is as follows: Connector 2 is embedded into the mounting groove 9 of resistor 1 and fixed with conductive adhesive; terminal sleeve 3 is fitted over connector 2 and resistor 1, and the linkage block 4 is rotated to cover the connection point between resistor 1 and electrode 7. Figure 1 As shown, electrode 7 is partially blocked by the wiring sleeve 3 at this time, reducing the area of ​​direct contact with high temperature during welding.

[0029] Rotate the positioning screw 5 to the preset position of the connector sleeve 3. The position can be adjusted according to the installation space of the circuit board design. Tighten the limit nut 6 to lock the threaded connection between the linkage block 4 and the connector 2, and prevent the connector sleeve 3 from shifting.

[0030] Align the resistor's pin 8 with the pads on the circuit board, and solder it using a reflow soldering process by connecting the pin's through-hole to the pad's positioning post. The through-hole design of pin 8 ensures precise soldering, reduces the rate of cold solder joints, and ensures installation stability.

[0031] When the circuit is powered on, the current flows from pin 8 on one side through electrode 7 into resistor 1. After being limited by the metal film of resistor 1, the current flows out through electrode 7 and pin 8 on the other side to the subsequent circuit, such as the signal input terminal of the operational amplifier of model OPA333. The connector 2 and linkage block 4 of the connecting component ensure that the current transmission path is stable and there is no additional impedance interference.

[0032] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An ultra-micro resistance with high safety, characterized by: It includes a resistor (1), on which a connection component is provided; The connection assembly includes a connector (2) disposed on one side of the resistor (1), and a wiring sleeve (3) is sleeved on the outer side of both the connector (2) and the resistor (1). A linkage block (4) is disposed on one side of the inner wall of the wiring sleeve (3). The linkage block (4) is threadedly connected to the connector (2), and electrodes (7) are respectively provided at both ends of the resistor (1), and pins (8) are respectively provided at the bottom of each electrode (7).

2. The ultra-micro resistance with high safety according to claim 1, characterized in that: The linkage block (4) extends to the outside of the connector (2), and the linkage block (4) is threadedly connected to the connector (2).

3. The ultra-micro resistance with high safety according to claim 1, characterized in that: One end of the linkage block (4) is rotatably connected to a positioning screw (5), and a limiting nut (6) is sleeved on the outside of the positioning screw (5).

4. The ultra-micro resistance with high safety according to claim 3, characterized in that: The limiting nut (6) is threadedly connected to the positioning screw (5), and the limiting nut (6) abuts against the outside of the wiring sleeve (3).

5. The ultra-micro resistance with high safety according to claim 1, characterized in that: The resistor (1) has a mounting groove (9) on its outer side, and the connector (2) is embedded in the mounting groove (9).

6. The ultra-micro resistance with high safety according to claim 1, characterized in that: Both pins (8) have through holes, and the pins (8) are fixedly connected to the electrode (7).

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