Corrosion-resistant sealed glass-sealed resistor device

Abstract

The utility model provides a kind of corrosion -resistant sealing type glass seal resistance device, belong to resistance element technical field, including resistance component, including circuit board, first electrode of fixed connection in the end of the circuit board;Connecting assembly, including the first mounting seat of being jointed in the glass cover outside, the second mounting seat of being inserted in the end of the first mounting seat.The beneficial effects of the utility model are: the sealing packaging of glass cover to chip main body, the enclosing sealing of mounting seat and sealing washer, the wire protection of protective tube and sealing glue, form triple sealing barrier, effectively isolate external corrosive medium, prolong service life;The sealing joint of glass cover and wire, the extrusion sealing of sealing washer, the gap filling of sealing glue, multiple sealing structure makes device overall leakage rate greatly reduce;Clamp block and card slot preposition, connecting rod and limit hole rigid locking, ensure that first, second mounting seat tightly enclose glass cover, no relative slack, structure stability is strong.

Description

Technical Field

[0001] This utility model belongs to the field of resistor element technology, specifically relating to a corrosion-resistant, sealed glass-sealed resistor device. Background Technology

[0002] A glass-sealed resistor is an electronic resistive element that uses glass as the encapsulation material. Its core structure consists of a resistor chip, electrode leads, and an outer glass encapsulation.

[0003] Glass-sealed resistors are widely used in precision electronic circuits due to the insulation and stability of glass encapsulation. However, traditional glass-sealed resistors have the following drawbacks: insufficient sealing performance; micro-gaps can easily form at the connection between the glass cover and the wires due to temperature changes, allowing corrosive gases or moisture to enter and cause oxidation failure of the chip body; poor sealing between the external support structure and the glass cover, failing to provide secondary protection; and the mounting base is prone to aging and cracking in highly corrosive environments; the connection between the wires and electrodes lacks effective protection, making them susceptible to breakage due to mechanical stress or corrosive media, affecting the reliability of circuit conduction; and the corrosion resistance and sealing performance of existing glass-sealed resistors are no longer sufficient for long-term stable operation in highly corrosive environments. Summary of the Invention

[0004] The purpose of this invention is to provide a corrosion-resistant, sealed glass-sealed resistor device, which aims to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A corrosion-resistant, sealed glass-sealed resistor device, comprising: A resistor assembly includes a circuit board, a first electrode fixedly connected to one end of the circuit board, a wire encapsulated at the end of the first electrode, a chip body encapsulated in the middle of the wire, and a glass cover encapsulated on the outside of the chip body. The end of the glass cover is sealed and snapped onto the sidewall of the wire. The wire is symmetrically arranged on the sidewall of the chip body. The chip body is electrically connected to the circuit board through the wire. The connecting assembly includes a first mounting base snapped onto the outside of the glass cover, a second mounting base inserted into the end of the first mounting base, a first fixing block fixedly connected to the side wall of the first mounting base, and a second fixing block fixedly connected to the side wall of the second mounting base. The second mounting base snaps onto the lower side wall of the glass cover, and the first fixing block and the second fixing block cooperate with each other.

[0006] As a preferred embodiment of the present invention, the connecting assembly further includes a connecting rod fixedly connected to the side wall of the first fixing block, and a limiting hole provided on the side wall of the second fixing block, wherein the end of the connecting rod is inserted into the center of the limiting hole.

[0007] As a preferred embodiment of the present invention, a sealing gasket is installed on the side wall of the first mounting seat to cooperate with the side wall of the second mounting seat, and the first mounting seat and the side wall of the second mounting seat are tightly fitted together.

[0008] In a preferred embodiment of this utility model, a locking block is fixedly connected to the side wall of the first mounting base, and a slot for cooperating with the locking block is opened on the side wall of the second mounting base, with the end of the locking block engaging inside the slot.

[0009] As a preferred embodiment of this utility model, the first mounting base and the second mounting base have clearance holes on their side walls for use with the wire, and the first mounting base and the second mounting base are fitted with protective tubes for use, the end of the protective tubes being snapped onto the outside of the wire.

[0010] In a preferred embodiment of this utility model, the end of the protective tube is fixedly connected to the side wall of the first electrode, and a sealant is provided at the connection between the end of the protective tube and the first electrode.

[0011] In a preferred embodiment of this utility model, a second electrode is fixedly connected to the end of the circuit board. The second electrode is used in conjunction with the first electrode, and the second electrode and the first electrode are symmetrically arranged at both ends of the circuit board.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the glass cover seals the chip body, the mounting base and the sealing gasket together form a triple sealing barrier, and the protective tube and sealant protect the wires, effectively isolating external corrosive media and extending service life; the sealing snap-fit ​​between the glass cover and the wires, the compression sealing of the sealing gasket, and the gap filling of the sealant, the multiple sealing structure greatly reduces the overall leakage rate of the device; the first and second mounting bases can be quickly assembled through snap-fit ​​and plug-in, without the need for complicated tools; the modular structure design facilitates component replacement and maintenance, reducing maintenance costs. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the left side structure of the resistor assembly of this utility model; Figure 3 This is an enlarged structural diagram of the connecting component of this utility model; Figure 4 This is a schematic diagram of the internal structure of the connecting component of this utility model; Figure 5 This is an enlarged structural diagram of point A of this utility model.

[0014] In the diagram: 100, resistor assembly; 101, circuit board; 102, first electrode; 103, wire; 104, chip body; 105, glass cover; 106, second electrode; 200, connecting assembly; 201, first mounting base; 202, second mounting base; 203, first fixing block; 204, second fixing block; 205, connecting rod; 206, limiting hole; 207, locking block; 208, locking slot; 209, protective tube. Detailed Implementation

[0015] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0016] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0017] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments. Example

[0018] Reference Figure 1-5 This is an embodiment of the present invention, which provides a corrosion-resistant, sealed glass-sealed resistor device, comprising: The resistor assembly 100 includes a circuit board 101, a first electrode 102 fixedly connected to the end of the circuit board 101, a wire 103 encapsulated at the end of the first electrode 102, a chip body 104 encapsulated in the middle of the wire 103, and a glass cover 105 encapsulated on the outside of the chip body 104. The end of the glass cover 105 is sealed and snapped onto the side wall of the wire 103. The wires 103 are symmetrically arranged on the side wall of the chip body 104. The chip body 104 is electrically connected to the circuit board 101 through the wires 103. The connecting assembly 200 includes a first mounting base 201 snapped onto the outside of the glass cover 105, a second mounting base 202 inserted into the end of the first mounting base 201, a first fixing block 203 fixedly connected to the side wall of the first mounting base 201, and a second fixing block 204 fixedly connected to the side wall of the second mounting base 202. The second mounting base 202 snaps onto the lower side wall of the glass cover 105, and the first fixing block 203 and the second fixing block 204 cooperate with each other.

[0019] Specifically, the circuit board 101, as the circuit carrier of the resistor device, provides a mounting reference for the first electrode 102 and the second electrode 106, realizing the connection of the external circuit; the first electrode 102 is fixedly connected to the end of the circuit board 101 and encapsulated with the wire 103, serving as a transition node for current input and output, realizing electrical conduction between the circuit board and the wire; the wire 103 is symmetrically arranged on both sides of the chip body 104, with one end encapsulated and connected to the first electrode 102 and the other end electrically connected to the chip body 104, forming a current transmission channel; the outer side is sealed to the end of the glass cover 105; the chip body 104 is a semiconductor chip with a specific resistance value, which is the core functional component of the resistor device, and is electrically connected to the circuit board 101 through the wire 103 to realize the resistance adjustment function; the outer side is completely encapsulated by the glass cover 105.

[0020] Furthermore, the glass cover 105 adopts a cover-shaped structure made of high-temperature resistant glass, which is tightly encapsulated on the outside of the chip body 104. The end is snapped to the side wall of the wire 103 through a sealing process to form a closed space, which isolates external air, water vapor and corrosive media, and protects the chip body. The second electrode 106 has the same structure as the first electrode 102 and is fixedly connected to the other end of the circuit board 101. It is symmetrically arranged with the first electrode 102 and together constitutes the input and output terminals of the circuit, enhancing the stability of the circuit connection. The first mounting base 201 adopts a semi-ring structure made of corrosion-resistant insulating material. The inner side is adapted to snapped to the outer side of the glass cover 105 to provide upper fixed support for the glass cover. The side wall is provided with a first fixing block 203 and a snap block 207. The second mounting base 202 is made of the same material as the first mounting base 201 and is semi-ring shaped. It is inserted into the end of the first mounting base 201 and snapped to the lower side wall of the glass cover 105. Together with the first mounting base, it surrounds the glass cover and achieves full circumference fixation. The side wall is provided with a second fixing block 204 and a slot 208.

[0021] Preferably, the first fixing block 203 is fixedly connected to the outer wall of the first mounting base 201, and is block-shaped, with a connecting rod 205 extending from the side wall, which cooperates with the second fixing block 204 to achieve a rigid connection between the first and second mounting bases; the second fixing block 204 is fixedly connected to the outer wall of the second mounting base 202, and is symmetrically arranged with the first fixing block 203, with a limit hole 206 on its side wall, which locks the position of the mounting base by cooperating with the connecting rod 205; the connecting rod 205 is fixedly connected to the rod-shaped structure on the side wall of the first fixing block 203, and its end is adapted to be inserted into the second fixing block 202. The center of the limiting hole 206 of the fixing block 204 enhances the connection strength between the first and second mounting seats through a snap-fit ​​structure; the limiting hole 206 is a through hole opened in the side wall of the second fixing block 204, which is adapted to the size of the connecting rod 205, and restricts the relative displacement of the first and second mounting seats through plug-in fit, ensuring that the mounting seats are tightly closed; the sealing gasket is a ring-shaped gasket made of silicone, which is installed between the mating surfaces of the first mounting seat 201 and the second mounting seat 202, and fills the gap by compression deformation, enhancing the sealing of the mounting seat connection and preventing the intrusion of external media.

[0022] It should be noted that the locking block 207 is fixedly connected to the protruding structure at the end of the first mounting base 201. The material is the same as that of the mounting base, and the end is wedge-shaped to facilitate insertion into the locking groove 208. The locking groove 208 is formed in the groove at the end of the second mounting base 202, which is adapted to the shape of the locking block 207. The end of the locking block 207 is engaged with the inside of the locking groove 208 to achieve pre-positioning of the end of the mounting base and to assist in the compaction and sealing of the sealing gasket. The protective tube 209 is made of insulating and corrosion-resistant tubing and is installed at the clearance holes of the first mounting base 201 and the second mounting base 202. The end is engaged with the outside of the wire 103 and is fixedly connected to the side wall of the first electrode 102, which protects and guides the wire. The sealant is applied at the connection between the end of the protective tube 209 and the first electrode 102. It is a high-temperature resistant sealant that fills the gap and cures to further enhance the sealing performance of the connection between the protective tube and the electrode.

[0023] When in use, the external current is input through the first electrode 102 or the second electrode 106 of the circuit board 101, and transmitted to the chip body 104 through the wire 103. The chip body adjusts the current through its own resistance characteristics, and then feeds it back to the circuit board through the other wire 103 and electrode to complete the resistance adjustment function. The chip body 104 is completely encapsulated by a glass cover 105. The end of the glass cover is sealed and snapped into the wire 103, forming the first sealing barrier to prevent external moisture and corrosive gases from directly contacting the chip. The first mounting base 201 and the second mounting base 202 are pre-positioned by the locking block 207 and the locking slot 208, and rigidly locked by the connecting rod 205 and the limiting hole 206, enclosing the glass cover and pressing the sealing gasket to form the second seal, preventing external media from intruding from the outside of the glass cover. The protective tube 209 wraps the wire 103, and its end is sealed to the first electrode 102 with sealant to prevent the medium from seeping in along the gaps in the wire, while protecting the wire from mechanical damage. The mounting base, fixing block, connecting rod and other structures of the connecting component 200 work together to firmly fix the core components such as the glass cover and wires, preventing component displacement or loosening of electrical connections due to vibration or impact, and ensuring the structural stability of the resistor device.

[0024] In summary, the glass cover's sealing encapsulation of the chip body, the enclosure seal between the mounting base and the gasket, and the wire protection by the protective tube and sealant form a triple sealing barrier, effectively isolating external corrosive media and extending service life. The sealing snap-fit ​​between the glass cover and the wires, the compression seal of the gasket, and the gap filling of the sealant, along with the multiple sealing structures, significantly reduce the overall leakage rate of the device. The encapsulated connection between the wires and electrodes, and the stable conduction between the chip body and the wires, combined with the fixing effect of the mounting base, maintain stable resistance accuracy and ensure reliable circuit adjustment function. The first and second mounting bases achieve rapid assembly through snap-fit ​​and plug-in connections, without the need for complex tools. The modular structure design facilitates component replacement and maintenance, reducing maintenance costs.

[0025] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible without substantially departing from the novel teachings and advantages of the subject matter described in this application. For example, variations in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​such as temperature, pressure, etc., installation arrangements, use of materials, color, orientation, etc. For instance, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of this utility model. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0026] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments may be described, i.e., those features that are not relevant to the currently considered best mode for carrying out the present invention, or those features that are not relevant to implementing the present invention.

[0027] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0028] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A corrosion-resistant, sealed glass-sealed resistor device, characterized in that, include: The resistor assembly (100) includes a circuit board (101), a first electrode (102) fixedly connected to the end of the circuit board (101), a wire (103) encapsulated at the end of the first electrode (102), a chip body (104) encapsulated in the middle of the wire (103), and a glass cover (105) encapsulated on the outside of the chip body (104). The end of the glass cover (105) is sealed and snapped into the side wall of the wire (103). The wire (103) is symmetrically arranged on the side wall of the chip body (104). The chip body (104) is electrically connected to the circuit board (101) through the wire (103). The connecting assembly (200) includes a first mounting base (201) snapped onto the outside of the glass cover (105), a second mounting base (202) inserted into the end of the first mounting base (201), a first fixing block (203) fixedly connected to the side wall of the first mounting base (201), and a second fixing block (204) fixedly connected to the side wall of the second mounting base (202). The second mounting base (202) snaps onto the lower side wall of the glass cover (105), and the first fixing block (203) and the second fixing block (204) cooperate with each other.

2. The corrosion-resistant, sealed glass-sealed resistor device according to claim 1, characterized in that: The connecting assembly (200) further includes a connecting rod (205) fixedly connected to the side wall of the first fixing block (203), and a limiting hole (206) provided on the side wall of the second fixing block (204), with the end of the connecting rod (205) inserted into the center of the limiting hole (206).

3. The corrosion-resistant, sealed glass-sealed resistor device according to claim 2, characterized in that: The first mounting base (201) has a sealing gasket installed on its side wall to cooperate with the side wall of the second mounting base (202), and the first mounting base (201) and the side wall of the second mounting base (202) are tightly fitted together.

4. The corrosion-resistant, sealed glass-sealed resistor device according to claim 3, characterized in that: The first mounting base (201) has a locking block (207) fixedly connected to its side wall, and the second mounting base (202) has a slot (208) on its side wall that cooperates with the locking block (207). The end of the locking block (207) is engaged with the inside of the slot (208).

5. The corrosion-resistant, sealed glass-sealed resistor device according to claim 4, characterized in that: The first mounting base (201) and the second mounting base (202) have clearance holes on their side walls for use with the wire (103), and the first mounting base (201) and the second mounting base (202) have protective tubes (209) installed on their side walls for use with the wire (103), with the end of the protective tube (209) snapped onto the outside of the wire (103).

6. The corrosion-resistant, sealed glass-sealed resistor device according to claim 5, characterized in that: The end of the protective tube (209) is fixedly connected to the side wall of the first electrode (102), and a sealant is provided at the connection between the end of the protective tube (209) and the first electrode (102).

7. The corrosion-resistant, sealed glass-sealed resistor device according to claim 6, characterized in that: A second electrode (106) is fixedly connected to the end of the circuit board (101). The second electrode (106) is used in conjunction with the first electrode (102), and the second electrode (106) and the first electrode (102) are symmetrically arranged at both ends of the circuit board (101).

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